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55 Years Ago: Manned Orbiting Laboratory Cancellation


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The Manned Orbiting Laboratory (MOL), a joint classified project of the U.S. Air Force (USAF) and the National Reconnaissance Office (NRO), sought to establish a crewed platform in low Earth orbit to obtain high-resolution photographic imagery of America’s 1960s Cold War adversaries. Approved in 1965, the MOL Program envisioned a series of space stations launched from a new pad in California and placed in low polar Earth orbit. Two-man crews, launching and returning to Earth aboard modified Gemini-B capsules, would work aboard the stations for 30 days at a time. Although the Air Force selected 17 pilots and built prototype hardware, the program faced budget pressures and competition from rapidly advancing technologies in uncrewed reconnaissance capabilities, leading to its cancellation on June 10, 1969.

Patch of the Manned Orbiting Laboratory (MOL) Program Illustration of the MOL as it would have appeared in orbit Space Launch Complex-6 under construction in 1966 at Vandenberg Air Force (now Space Force) Base in California
Left: Patch of the Manned Orbiting Laboratory (MOL) Program. Middle: Illustration of the MOL as it would have appeared in orbit. Image credit: Courtesy National Air and Space Museum. Right: Space Launch Complex-6 under construction in 1966 at Vandenberg Air Force (now Space Force) Base in California. Image credit: Courtesy National Reconnaissance Office.

Announced by Defense Secretary Robert S. McNamara in December 1963 and formally approved by President Lyndon B. Johnson in August 1965, the MOL Program envisioned a series of 60-foot-long space stations in low polar Earth orbit, occupied by 2-person crews for 30 days at a time, launching and returning to Earth aboard modified Gemini-B capsules. Externally similar to NASA’s Gemini spacecraft, the MOL version’s major modification involved a hatch cut into the heat shield that allowed the astronauts to internally access the laboratory located behind the spacecraft without the need for a spacewalk. While MOL astronauts would carry out a variety of experiments, a telescope with sophisticated imaging systems for military reconnaissance made up the primary payload in the laboratory. The imaging system, codenamed Dorian and carrying the Keyhole KH-10 designation, included a 72-inch diameter primary mirror designed to provide high resolution images of targets of military interest. To reach their polar orbits, MOLs would launch from Vandenberg Air Force (now Space Force) Base (AFB) in California. Construction of Space Launch Complex-6 (SLC-6) there began in March 1966 to accommodate the Titan-IIIM launch vehicle. The sensitive military nature of MOL resulted in its top-secret classification, not declassified by the NRO until October 2015.

Group 1 – Michael J. Adams, Albert H. Crews, John L. Finley, Richard E. Lawyer, Lachlan Macleay, Francis G. Neubeck, James M. Taylor, and Richard H. Truly Group 2 – Robert L. Crippen, Robert F. Overmyer, Karol J. Bobko, C. Gordon Fullerton, and Henry W. Hartsfield Group 3 – Robert T. Herres, Robert H. Lawrence, Donald H. Peterson, and James A. Abrahamson
The three selection groups of Manned Orbiting Laboratory pilots. Left:  Group 1 – Michael J. Adams, Albert H. Crews, John L. Finley, Richard E. Lawyer, Lachlan Macleay, Francis G. Neubeck, James M. Taylor, and Richard H. Truly. Middle: Group 2 – Robert L. Crippen, Robert F. Overmyer, Karol J. Bobko, C. Gordon Fullerton, and Henry W. Hartsfield. Right: Group 3 – Robert T. Herres, Robert H. Lawrence, Donald H. Peterson, and James A. Abrahamson. Image credits: Courtesy U.S. Air Force.

The USAF selected 17 pilots in three groups for the MOL program. The first group, selected on Nov. 12, 1965, consisted of eight pilots – Michael J. Adams, Albert H. Crews, John L. Finley, Richard E. Lawyer, Lachlan Macleay, Francis G. Neubeck, James M. Taylor, and Richard H. Truly. Adams retired from the MOL program in July 1966 to join the X-15 program. While making his seventh flight, he died in November 1967 when his aircraft crashed. Finley left the program in April 1968, returning to the U.S. Navy. The second group, selected on June 17, 1966, consisted of five pilots – Karol J. “Bo” Bobko, Robert L. Crippen, C. Gordon Fullerton, Henry W. Hartsfield, and Robert F. Overmyer. The third and final group of four pilots, chosen on June 30, 1967, comprised James A. Abrahamson, Robert T. Herres, Robert H. Lawrence, and Donald H. Peterson. Lawrence has the distinction as the first African American selected as an astronaut by any national space program. He died in the crash of an F-104 in December 1967.

Group photo of 14 of the 15 Manned Orbiting Laboratory pilots still in the program in early 1968
Group photo of 14 of the 15 Manned Orbiting Laboratory pilots still in the program in early 1968 – John L. Finley, front row left, Richard E. Lawyer, James M. Taylor, Albert H. Crews, Francis G. Neubeck, and Richard H. Truly; Robert T. Herres, back row left, James W. Hartsfield, Robert F. Overmyer, C. Gordon Fullerton, Robert L. Crippen, Donald H. Peterson, Karol J. Bobko, and James A. Abrahamson. Michael J. Adams had left the program and died in an X-15 crash, Robert H. Lawrence had died in a F-104 crash, and Lachlan Macleay does not appear for unknown reasons.

The only space launch in the MOL program occurred on Nov. 3, 1966, when a Titan-IIIC rocket took off from Cape Canaveral Air Force (now Space Force) Station’s Launch Complex 40. The rocket carried a MOL mockup, without the KH-10 imaging payload, and a Gemini-B capsule refurbished after it flew NASA’s uncrewed Gemini 2 suborbital mission in January 1965. This marked the only reflight of an American spacecraft intended for human spaceflight until the advent of the space shuttle. The flight successfully demonstrated the hatch in the heat shield design during the capsule’s reentry after a 33-minute suborbital flight. Sailors aboard the U.S.S. La Salle (LPD-3) recovered the Gemini-B capsule near Ascension Island in the South Atlantic Ocean and returned it to the Air Force for postflight inspection. Visitors can view it on display at the Cape Canaveral Space Force Museum. The MOL mockup entered Earth orbit and released three satellites. It also carried a suite of 10 experiments called Manifold, ranging from cell growth studies to tests of new technologies. Although the experiments could have operated for 75 days, the MOL stopped transmitting after 30 days, and decayed from orbit Jan. 9, 1967.

The only operational launch of the Manned Orbiting Laboratory (MOL) program, a Gemini-B capsule and a MOL mockup atop a Titan-IIIC rocket in 1966 The flown Gemini-B capsule on display at the Cape Canaveral Space Force Museum in Florida Former MOL and NASA astronaut Robert L. Crippen stands beside the only flown Gemini-B capsule – note the hatch in the heat shield at top
Left: The only operational launch of the Manned Orbiting Laboratory (MOL) program, a Gemini-B capsule and a MOL mockup atop a Titan-IIIC rocket in 1966. Middle: The flown Gemini-B capsule on display at the Cape Canaveral Space Force Museum in Florida. Right: Former MOL and NASA astronaut Robert L. Crippen stands beside the only flown Gemini-B capsule – note the hatch in the heat shield at top.

By 1969, the MOL program ran several years behind schedule and significantly over budget, and other than the one test flight had not flown any actual hardware. Although no flight hardware yet existed, aside from the long lead time mirrors for the imaging system, plans in May 1969 called for four 30-day MOL missions at 6-month intervals starting in January 1972. However, technology for uncrewed military reconnaissance had advanced to the stage that the KH-10 system proposed for MOL had reached obsolescence. Following a review, the new administration of President Richard M. Nixon, faced with competing priorities for the federal budget, announced the cancellation of the MOL program on June 10, 1969. 

Prototypes of elements of the Manned Orbiting Laboratory (MOL) under construction Medium fidelity mockup of the MOL crew cabin, with suited crew member and the narrow tunnel leading to the Gemini-B capsule Former MOL and NASA astronaut Robert L. Crippen stands next to the spacesuit developed for the MOL program
Left: Prototypes of elements of the Manned Orbiting Laboratory (MOL) under construction. Middle: Medium fidelity mockup of the MOL crew cabin, with suited crew member and the narrow tunnel leading to the Gemini-B capsule. Right: Former MOL and NASA astronaut Robert L. Crippen stands next to the spacesuit developed for the MOL program. Image credits: Courtesy National Reconnaissance Office.

Although the sudden cancellation came as a shock to those working on the program, some of the personnel involved as well as some of the hardware developed for it, made their way into other agencies and projects. For example, the Air Force had developed a flexible spacesuit required by the MOL pilots to navigate through the narrow tunnel between the Gemini-B capsule and the laboratory – that technology transferred to NASA for future spacesuit development. The waste management system designed for use by MOL pilots flew aboard Skylab. The MOL laboratory simulator and the special computer to operate it also transferred to NASA. The technology developed for the acquisition and tracking system and the mission development simulator for the KH-10 imaging system found its way into NASA’s earth remote sensing program.

Official NASA photograph of the Group 7 astronauts – Karol J. Bobko, left, C. Gordon Fullerton, Henry W. Hartsfield, Robert L. Crippen, Donald H. Peterson, Richard H. Truly, and Robert F. Overmyer – transfers from the Manned Orbiting Laboratory program
Official NASA photograph of the Group 7 astronauts – Karol J. Bobko, left, C. Gordon Fullerton, Henry W. Hartsfield, Robert L. Crippen, Donald H. Peterson, Richard H. Truly, and Robert F. Overmyer – transfers from the Manned Orbiting Laboratory program.

After the cancellation of the MOL program, NASA invited the younger (under 35) MOL pilots to join its astronaut corps. Bobko, Crippen, Fullerton, Hartsfield, Overmyer, Peterson, and Truly transferred to NASA on August 14, 1969, as the Group 7 astronaut class. In 1972, Crippen and Bobko participated in the 56-day ground-based Skylab Medical Experiment Altitude Test, a key activity that contributed to Skylab’s success. Although it took nearly 12 years for the first of the MOL transfers to make it to orbit, all of them went on to fly on the space shuttle in the 1980s, six of them as commanders. In an ironic twist, NASA assigned Crippen to command the first space shuttle polar orbiting mission (STS-62A) that would have launched from the SLC-6 pad at Vandenberg in 1986. But after the January 1986 Challenger accident, the Air Force reduced its reliance on the shuttle as a launch platform and cancelled the mission. Truly served as NASA administrator from 1989 to 1992 and Crippen as the director of NASA’s Kennedy Space Center in Florida from 1992 to 1995. NASA hired Crews, not as an astronaut but as a pilot, and he stayed with the agency until 1994. Of the MOL astronauts that did not meet NASA’s age limit requirement, many went on to have stellar careers. Abrahamson joined NASA in 1981 as associate administrator for manned space flight, then went on to lead the Strategic Defense Initiative from 1984 to 1989. Herres served as vice chairman of the Joint Chiefs of Staff from 1987 to 1990.

Space shuttle Enterprise during fit checks at the SLC-6 launch facility at Vandenberg Air Force (now Space Force) Base in 1985 Athena rocket awaits launch on SLC-6 in 1997 Delta-IV Heavy lifts off from SLC-6 in 2011
Left: Space shuttle Enterprise during fit checks at the SLC-6 launch facility at Vandenberg Air Force (now Space Force) Base in 1985. Middle: Athena rocket awaits launch on SLC-6 in 1997. Right: Delta-IV Heavy lifts off from SLC-6 in 2011.

Following cancellation of the MOL program, the Air Force mothballed the nearly completed SLC-6 at Vandenberg. In 1972, the Air Force and NASA began looking at SLC-6 as a pad to launch space shuttles with payloads requiring polar orbits, with the decision made in 1975. Workers began converting SLC-6 to launch the space shuttle in 1979. Although space shuttle Enterprise used SLC-6 for fit checks in 1985, the Challenger accident the following year caused the Air Force to cancel plans to use the space shuttle to launch polar orbiting satellites, and they once again mothballed the pad. Following modifications, small Athena rockets used the pad between 1995 and 1999, the first launches from the facility after 30 years of development and modifications. Another conversion begun in 1999 modified SLC-6 to launch Delta-IV and Delta-IV Heavy rockets starting in 2006, with the last flight in 2022. SpaceX leased SLC-6 in April 2023 to begin launches of Falcon 9 and Falcon Heavy rockets in 2025.

Schematic of the optical system of the Manned Orbiting Laboratory (MOL), including the 72-inch primary mirror at right The Multiple Mirror Telescope Observatory on Mount Hopkins, Arizona, in its original six-mirror configuration using mirrors from the MOL Program
Left: Schematic of the optical system of the Manned Orbiting Laboratory (MOL), including the 72-inch primary mirror at right. Image credit: courtesy: NRO. Right: The Multiple Mirror Telescope Observatory on Mount Hopkins, Arizona, in its original six-mirror configuration using mirrors from the MOL Program. Image credit: Courtesy Multiple Mirror Telescope.

The NRO transferred six surplus 72-inch mirrors from the cancelled KH-10 program to the Smithsonian Astrophysical Observatory for the Multiple-Mirror Telescope (MMT) it built in association with the University of Arizona, located on Mount Hopkins, Arizona. By combining the light of the six mirrors, they achieved an effective light collecting area of a single 177-inch telescope mirror. The MMT operated in this six-mirror configuration for nearly 20 years before a single 215-inch mirror replaced them.

Read Abrahamson’s, Bobko’s, Crew’s, Crippen’s, Fullerton’s, Hartsfield’s, Peterson’s, and Truly’s recollections of the MOL program in their oral history interviews with the JSC History Office. In 2019, the NRO held a panel discussion with MOL pilots Abrahamson, Bobko, Macleay, Crews, and Crippen, by then free to talk about their experiences during the now declassified program.

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      Left: Image from lunar orbit of the Fra Mauro highlands, the proposed landing site for Apollo 13 (inside white circle). Middle: The Lunar Module Intrepid as seen from the Command Module Yankee Clipper shortly after undocking. Right: Yankee Clipper as seen from Intrepid.
      The Apollo 12 astronauts awoke for their fourth mission day to find themselves within the Moon’s gravitational sphere of influence. Apollo 12 sailed behind the Moon, losing contact with Earth. Thirteen minutes later, the astronauts fired the Service Propulsion System (SPS) engine for the Lunar Orbit Insertion burn, placing them into an elliptical orbit around the Moon.

      Left: Still from 16 mm film looking out Alan L. Bean’s window at about 3,500 feet during the descent, showing the location of Surveyor Crater, the Apollo 12 landing site. Right: Illustration of the Apollo 12 landing site and the two surface traverses.
      During the third lunar orbit, the crew fired the SPS engine again to circularize their orbit. The next day, Conrad and Bean donned their spacesuits and reactivated the LM for the separation and landing, extending Intrepid’s landing legs. After undocking and while behind the Moon, Conrad and Bean fired the LM’s Descent Propulsion System engine to lower Intrepid’s orbit. Exactly half a revolution later, Intrepid began the burn to drop it from orbit all the way to the landing in the Ocean of Storms. With Bean providing updates from the guidance computer, Conrad skillfully piloted Intrepid to a smooth landing just northwest of Surveyor Crater, and as they learned later, only 538 feet from Surveyor 3. Without much fanfare, Conrad and Bean completed the postlanding checklist, although Bean allowed himself a little exuberant “Good landing, Pete!  Outstanding, man!  Beautiful!” Conrad radioed to Mission Control, “Okay, we’re in hot shape, Houston. We’re in real good shape!” They had a chance to look out the windows, with Bean exclaiming, “Holy cran, it’s beautiful out here!” Conrad replied, “It sure is; it’s something else,” later adding, “Man! I can’t wait to get outside!”

      Left: Charles “Pete” Conrad on the Lunar Module ladder about to descend to the surface. Middle: Alan L. Bean takes his first steps on the Moon. Right: Conrad working on the central station of the Apollo Lunar Surface Experiment Package, with its various instruments deployed around it.
      Conrad and Bean donned their Portable Life Support System (PLSS) backpacks that provided oxygen and communications while on the surface and donned their helmets and gloves. They depressurized the LM, opened the hatch, and Conrad backed out onto the porch, slowly climbing down the ladder. Halfway down, he pulled a lanyard that deployed a color TV camera on the side of the LM’s descent stage, providing a view of him on the LM ladder. After he jumped from the bottom rung onto the footpad, Conrad exclaimed, “Whoopie! Man, that may have been a small one for Neil, but that’s a long one for me,” in reference to Armstrong’s famous words as he took humanity’s first step on the Moon and Conrad’s shorter stature. As he stepped off the pad, he remarked, “Oooh is that soft and queasy.” After taking a few tentative steps, Conrad informed everyone that he could see Surveyor 3 sitting inside the crater. He collected the contingency sample – in case they had to leave quickly due to an emergency, geologists would have one small sample from the Ocean of Storms.
      Bean joined Conrad on the surface, both acclimating rapidly to working in one-sixth g. Conrad set up the S-band antenna for communications with Earth, but while setting up the TV camera, Bean accidentally pointed it at the Sun and damaged the vidicon tube, ending the live TV transmission from the Moon. Bean deployed the Solar Wind Collector (SWC), a Swiss experiment that collected particles from the solar wind, and then he and Conrad set up the American flag. They began the primary task of the first spacewalk – setting up the various instruments of the Apollo Lunar Surface Experiment Package (ALSEP). Conrad and Bean carried them to their deployment location about 430 feet to the northwest of Intrepid. They explored the area around the ALSEP site, visiting craters of interest and collecting rock and soil samples before heading back toward Intrepid. They remarked on several occasions how the lunar dust clung to their suits and equipment, and as Conrad quipped, “We’re going to be a couple of dirty boogers.” First Bean then Conrad climbed up the ladder and once inside Intrepid they closed the hatch and repressurized the cabin. Their first spacewalk lasted 3 hours and 56 minutes. They set up hammocks in Intrepid and went to sleep.

      Left and middle: Charles “Pete” Conrad and Alan L. Bean with the Surveyor 3 spacecraft, with their Lunar Module (LM) Intrepid visible in the background. Right: View from inside the LM through Bean’s window following the second spacewalk.
      After a short night’s rest, Conrad and Bean prepared for their second spacewalk. As before, first Conrad and then Bean descended the ladder to the surface. Conrad walked to the ALSEP to inspect one of the instruments, the seismometer they deployed during the first spacewalk picking up his footsteps. Both then headed west from Intrepid, where Conrad rolled two rocks down into a crater, the vibrations captured by the seismometer. They collected several documented samples, often preceded with expressions like “Oooooh!” and “That’s a beauty!” and dug a trench to expose subsurface material, collecting a sample from about eight inches deep.
      They set off toward the main objective of this spacewalk – Surveyor 3, resting on the inner slope of 600-foot-wide Surveyor Crater. Entering the crater from the south rim, they walked counterclockwise while descending down the slope until they reached the robotic spacecraft. After taking “tourist” pictures with Surveyor, the two photographed the craft from all angles, noting that the trenches left by its scoop and the marks from its footpads when it bounced after landing looked as fresh as when Surveyor photographed them in 1967. Using cutters, Conrad removed the craft’s camera, scoop, and other parts for return to Earth, where engineers and scientists examined them for the effects of 31 months in the harsh lunar environment. The work at Surveyor completed, the two returned to Intrepid. Bean retrieved the SWC experiment, overcoming difficulties in rolling it back up. Compared with a short 77-minute exposure during Apollo 11, this SWC collected samples of the solar wind for nearly 19 hours. With everything packed up, Bean followed by Conrad headed up the ladder. After closing the hatch, they repressurized Intrepid, ending the 3-hour 49-minute excursion.

      The Apollo 12 landing site photographed by the Lunar Reconnaissance Orbiter in 2011, the inset showing the Lunar Module Intrepid’s descent stage.

      Left: A still from 16 mm film recorded aboard Yankee Clipper of Intrepid’s approach just prior to docking. Middle: The Moon shortly after Trans Earth Injection. Right: A receding Moon during the trans Earth coast.
      After returning inside Intrepid, Conrad and Bean took photographs out the windows, showing the signs of their visit – numerous footprints, the American flag, the S-band antenna, and in the distance, the ALSEP station. As Gordon in Yankee Clipper flew overhead on his 30th lunar revolution, Intrepid’s Ascent Stage engine ignited, and Conrad and Bean lifted off from the Moon after 31 hours and 31 minutes on the surface. Conrad exclaimed, “Liftoff! And away we go!” with Bean adding, “Boy, did it fire!” Intrepid and Yankee Clipper executed a series of maneuvers that led to their docking about three and a half hours after liftoff from the Moon. Their independent flights had lasted 37 hours and 42 minutes. The three astronauts opened the hatches between the two spacecraft and began transfers from Intrepid into Yankee Clipper, including the lunar samples, cameras, and film. Gordon transferred some unneeded items to be jettisoned in Intrepid. The transfers completed, they closed the hatches between the spacecraft and jettisoned the LM. To calibrate the seismometer left on the Moon, controllers sent a command to Intrepid to fire its thrusters to drop it out of orbit and send it crashing onto the surface. The seismometer recorded signals for nearly one hour after the impact.

      Left: Recording from the Apollo 12 seismometer of the intentional crash of Intrepid’s ascent stage. Right: LRO image of the impact area and debris field of Intrepid’s ascent stage, east of the Fra Mauro B crater.
      The primary activity for their remaining time around the Moon consisted of photographing potential landing sites for future Apollo missions, such as the Fra Mauro highlands and the Descartes region. On their 45th revolution, they went around to the Moon’s back side for the last time and they fired the SPS for the Trans Earth Injection burn. Apollo 12 left lunar orbit after 3 days 17 hours and 2 minutes. Conrad radioed to Mission Control, “Hello, Houston. Apollo 12’s en route home.”
      During the three-day return trip to Earth, the astronauts conducted a midcourse maneuver to refine their trajectory, answered questions from geologists and other scientists, and held a press conference at the end of which they held up a homemade sign to the camera that read, “Yankee Clipper sailed with Intrepid to the Sea of Storms, Moon, November 14, 1969,” signed by all three crew members. With the Sun and the Earth nearly aligned, the astronauts could only see a very thin crescent of their home planet, prompting Conrad to comment, “Houston, we just got our first glimpse of you this morning, and there’s not very much of you out there.” 

      Left: The Moon continues to shrink in size as Apollo 12 heads for home. Middle: The Earth appearing as a thin crescent. Right: The Apollo 12 astronauts observed a total solar eclipse as they passed into Earth’s shadow shortly before reentry.

      Left: The Apollo 12 Command Module Yankee Clipper descends on its three main parachutes seconds before splashdown. Middle: A recovery helicopter hovers over Yankee Clipper in the Stable II, or apex down, position, seconds after splashdown. Right: Image taken by a recovery diver of the decontamination officer assisting Alan L. Bean out of Yankee Clipper, with Richard F. Gordon, left, and Charles “Pete” Conrad already aboard the life raft.
      Shortly before reentry, orbital mechanics had a show in store for the astronauts – their trajectory passed through the Earth’s shadow, treating them to a total solar eclipse. Gordon radioed Mission Control, “We’re getting a spectacular view at eclipse,” and Bean added that it was a “fantastic sight.” The excitement of the eclipse over, the astronauts prepared the cabin for reentry. The CM separated from the Service Module and rotated to point its heatshield into the direction of flight. At 400,000 feet, Yankee Clipper now travelling at 24,625 miles per hour encountered the first tendrils of Earth’s atmosphere. About four minutes of radio blackout followed as ionized gases created by the heat of reentry surrounded the spacecraft. As Apollo 12 came out of the blackout, the prime recovery ship U.S.S. Hornet established radar contact with the spacecraft at a distance of 119 miles. At about 24,000 feet, the spacecraft jettisoned its apex cover, then deployed its two drogue parachutes to slow and stabilize the capsule. At 10,000 feet, the three main orange and white parachutes deployed, with Conrad reporting, “Three gorgeous beautiful chutes.” Precisely 244 hours and 36 minutes after lifting off from Florida, Apollo 12 splashed down in the Pacific Ocean less than four miles from Hornet, bringing the second lunar landing mission to a successful conclusion.

      Left: Apollo 12 astronauts Richard F. Gordon, left, Alan L. Bean, and Charles “Pete” Conrad aboard the recovery helicopter. Middle: Conrad, front, Gordon, and Bean walk from the helicopter to the Mobile Quarantine Facility (MQF). Right: Admiral John S. McCain addresses the Apollo 12 astronauts in the MQF.
      The capsule assumed the apex down Stable 2 position in the water, but in less than five minutes three self-inflating balloons righted the spacecraft into the Stable 1 upright orientation. Five minutes later, a helicopter dropped the first three recovery team swimmers into the water, tasked with securing a flotation collar and rafts to the spacecraft. Decontamination officer Ernest “Ernie” L. Jahncke next dropped into the water and once the crew opened the hatch, he handed them fresh flight suits and respirators. A few minutes later, the crew reopened the hatch, and first Conrad, then Gordon, and finally Bean climbed aboard a life raft where Jahncke used a disinfectant solution to decontaminate the astronauts and the spacecraft. The recovery helicopter lowered a Billy Pugh net to haul the astronauts up from the raft, first Gordon, then Bean, and finally Conrad. Aboard the helicopter, NASA flight surgeon Dr. Clarence A. Jernigan gave each astronaut a brief physical examination during the short flight back to Hornet, declaring all three healthy.
      After it landed on Hornet’s deck, sailors lowered the helicopter to the hangar deck, where Conrad, Gordon, and Bean, followed by Dr. Jernigan, walked the few steps to the Mobile Quarantine Facility (MQF) where NASA engineer Brock R. “Randy” Stone awaited them. He sealed the door of the MQF exactly one hour after splashdown. The five men spent the next five days together in the MQF until they arrived at the Lunar Receiving Laboratory (LRL) at MSC. The astronauts took congratulatory phone calls from President Richard M. Nixon, who field-promoted all three from U.S. Navy Commanders to Captains, and from NASA Administrator Thomas O. Paine. After the astronauts talked briefly with their families, Commander-in-Chief of Pacific Naval Forces Admiral John S. McCain formally welcomed them back to Earth, followed by brief speeches by Rear Admiral Donald C. Davis, Commander of Recovery Forces, and Capt. Carl J. Seiberlich, Hornet’s skipper.

      Left: Apollo 12 Command Module Yankee Clipper in the water with U.S.S. Hornet approaching as a rescue helicopter circles. Middle: Recovery team members lift Yankee Clipper out of the water. Right: Sailors haul Yankee Clipper aboard the Hornet.
      Within an hour after the astronauts arrived on board Hornet, the recovery team hauled Yankee Clipper out of the water and towed it below to the hangar deck next to the MQF. As Hornet set sail for Pearl Harbor, arriving there four days later, workers attached a hermetically sealed plastic tunnel between the MQF and Yankee Clipper, allowing Stone to leave the MQF and open the hatch to the capsule without breaking the biological barrier. He retrieved the two rock boxes containing the lunar samples, the bags containing the Surveyor parts, film cassettes, and mission logs from the capsule. He brought them to the MQF where he sealed them in plastic bags and transferred them to the outside through a transfer lock that included a decontamination wash.
      Outside the MQF, NASA engineers placed these items into transport containers and loaded them aboard two separate aircraft. The first aircraft carrying one rock box and a second package containing film departed Hornet within nine hours of the recovery, flying to Pago Pago, American Samoa. From there the two containers were placed aboard a cargo aircraft and flown directly to Ellington Air Force Base (AFB) near MSC in Houston, arriving there late in the afternoon of Nov. 25. A second aircraft departed Hornet 14 hours after the first and included the second rock box, additional film as well as the astronaut medical samples. It flew to Pago Pago where workers transferred the containers to another cargo plane that flew them to Houston. Less than 48 hours after splashdown, scientists in the LRL were examining the lunar samples and processing the film.

      Left: Technicians carry the first box of Apollo 12 lunar samples from the cargo plane after its arrival at Ellington Air Force Base in Houston. Middle: Technicians log in the first set of Apollo 12 lunar samples and film at the Lunar Receiving Laboratory’s (LRL) loading dock. Right: A technician weighs the first Apollo 12 Sample Return Container in the LRL.

      Left: Technicians place the first Apollo 12 Sample Return Container (SRC) inside a glovebox at the Lunar Receiving Laboratory. Middle: The first Apollo 12 SRC inside a glovebox. Right: Scientists get the first glimpse of the Moon rocks inside the first SRC.

      Left: Apollo 12 astronauts Richard F. Gordon, second from left, Alan L. Bean and Charles “Pete” Conrad prepare their mission report inside the MQF. Middle: Workers at Pearl Harbor in Honolulu offload the Mobile Quarantine Facility (MQF) from Hornet with the Apollo 12 crew inside. Right: Workers at Ellington Air Force Base in Houston offload the MQF with the astronauts inside.
      Meanwhile, in the Pacific Ocean, Hornet sailed for Pearl Harbor, Hawaii, with the astronauts inside the MQF to maintain the strict back-contamination protocols. They also celebrated Thanksgiving on Nov. 27. Dr. Jernigan conducted regular medical examinations of the astronauts, who showed no ill effects from their ten-day spaceflight or any signs of infection by any lunar microorganisms. The crew members availed themselves of one amenity aboard the MQF that was a novelty at the time – a microwave oven for meal preparation.
      On Nov. 28, Hornet arrived at Pearl Harbor. Workers lifted the MQF with the astronauts inside onto a flat-bed trailer. After a brief welcoming ceremony including traditional Hawaiian flower leis, ukulele music, and hula dancers, they drove the MQF to nearby Hickam AFB, where Air Force personnel loaded it onto a cargo aircraft. After an eight-hour flight, the aircraft arrived at Ellington on the morning of Nov. 29, where the MQF was offloaded in front of a waiting crowd of well-wishers including MSC Director Robert R. Gilruth and Apollo 11 astronaut Neil A. Armstrong. The astronauts’ wives and children were on hand to welcome them home to Houston. Workers placed the MQF on a flat-bed truck and drove it to the LRL. Less than two hours after landing in Houston the astronauts arrived inside the Crew Reception Area (CRA) where they spent the next 11 days. During their time in quarantine, they completed many of the postflight debriefs and examined the lunar rocks as well as the parts of Surveyor 3 such as its camera that they returned from the Ocean of Storms.

      Left: Robert R. Gilruth, director of the Manned Spacecraft Center, now NASA’s Johnson Space Center in Houston, welcomes the Apollo 12 astronauts home. Middle: The Apollo 12 astronauts’ wives Barbara Gordon, left, Jane Conrad, and Sue Bean and their children welcome their husbands home. Right: Apollo 11 astronaut Neil A. Armstrong greets the Apollo 12 crew upon their return to Ellington.

      Left: Workers drive the Apollo 12 astronauts inside the Mobile Quarantine Facility (MQF) from Ellington Air Force Base to the Manned Spacecraft Center (MSC), now NASA’s Johnson Space Center in Houston. Middle: The MQF approaches MSC. Right: The MQF docked the MSC’s Building 37, the Lunar Receiving Laboratory.

      Left: Charles “Pete” Conrad examines some of the Moon rocks he and Alan L. Bean returned from the Moon. Middle: Conrad and Richard F. Gordon place the rocks samples back in the collection bags. Right: Conrad examines the camera from Surveyor 3 that he and Bean returned from the Moon.

      Left: The Apollo 12 Command Module Yankee Clipper arrives at the Lunar Receiving Laboratory (LRL) at the Manned Spacecraft Center, now NASA’s Johnson Space Center in Houston. Middle: Yankee Clipper temporarily parked outside the LRL before workers roll it inside. Right: In the LRL, Richard F. Gordon writes on Yankee Clipper that served as his home for 10 days.
      After the astronauts departed Hornet in Pearl Harbor, workers lifted Yankee Clipper from the carrier’s flight deck to the dock and drove it to Hickam AFB where technicians safed the vehicle by draining its toxic fuels. To preserve back-contamination protocols, Yankee Clipper’s hatch remained sealed. On Dec. 1, workers loaded Yankee Clipper onto a cargo aircraft at Hickam AFB. It arrived at Ellington AFB the next day and workers trucked it to the LRL, then towed it inside the spacecraft room of the CRA. The Apollo 12 astronauts signed their names on the capsule below the same words they held up during their inflight news conference – “Yankee Clipper Sailed with Intrepid to The Ocean of Storms, Moon, November 14, 1969.”

      Left: The Apollo 12 Command Module Yankee Clipper on display at the Virginia Air and Space Center in Hampton. Middle: A technician examines the Surveyor 3 camera returned by Apollo 12. Right: The Surveyor 3 camera on display at the Smithsonian Institution’s National Air and Space Museum in Washington, D.C.
      Visitors to the Virginia Air and Space Center in Hampton can view the Apollo 12 CM Yankee Clipper on display. Surveyor’s camera is on display at the Smithsonian Institution’s National Air and Space Museum in Washington, D.C.
      Apollo 13

      Left: Apollo 13 astronaut James A. Lovell preparing to test his spacesuit in a vacuum chamber in the Space Environment Simulation Laboratory at the Manned Spacecraft Center, now NASA’s Johnson Space Center in Houston. Middle: Workers at NASA’s Kennedy Space Center in Florida prepare the Apollo 13 Command and Service Module. Right: Lovell during the geology field trip to Kilbourne Hills, New Mexico.
      The next Moon landing mission, Apollo 13, planned to launch on March 12, 1970, and visit the Fra Mauro highlands region of the Moon. With the mission’s increased emphasis on science, geology training for the Apollo 13 prime crew of Commander James A. Lovell, CMP Thomas K. “Ken” Mattingly, and LMP Fred W. Haise, and their backups John W. Young, Jack L. Swigert, and Charles M. Duke, took on greater importance. Lovell, Haise, Young, and Duke, accompanied by several geologists, traveled to Kilbourne Hole, New Mexico, for a one-day geology field trip on Nov. 11. The area’s volcanic origins served as appropriate training for their planned landing site, then believed to be a result of volcanic activity. The astronauts practiced deploying their ALSEP set of instruments, including during suited tests in a vacuum chamber in MSC’s Space Environment Simulation Laboratory. At KSC, workers in the Manned Spacecraft Operations Building (MSOB) continued preparing both the CSM and the LM for Apollo 13 prior to stacking with the Saturn V rocket in December.
      Apollo 14

      Left: The Apollo 14 Command and Service Modules arrive at NASA’s Kennedy Space Center (KSC) for preflight processing. Middle: The Apollo 14 Lunar Module (LM) descent stage arrives at KSC. Right: The Apollo 14 LM ascent stage arrives at KSC.
      Spacecraft components for Apollo 14, then planned for launch around July 1970, arrived at KSC in November 1969. The CM and SM arrived on Nov. 19 and workers in the MSOB mated the two components five days later. The two stages of the LM arrived in the MSOB on Nov. 24.
      With special thanks to Robert B. Fish for his expertise on U.S.S. Hornet recovery operations.
      To be continued …
      News from around the world in November 1969:
      November 10 – Sesame Street premieres on PBS.
      November 12 – Five Americans and one New Zealander became the first women to visit the South Pole.
      November 15 – Wendy’s Hamburgers opens in Columbus, Ohio.
      November 20 – Brazilian soccer star Pelé scores his 1,000th goal.
      November 22 – Isolation of a single gene announced by scientists at Harvard University.
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