Question: Which astronaut flew on the Apollo 7 becoming NASA's 3rd civilian astronaut after Neil Armstrong and Elliot See?

full_context: Document 1: Walter Cunningham: Ronnie Walter Cunningham (born March 16, 1932), (Col, USMCR, Ret.), better known as Walter Cunningham, is a retired American astronaut. In 1968, he was a Lunar Module Pilot on the Apollo 7 mission. He was NASA's third civilian astronaut (after Neil Armstrong and Elliot See), and has also been a fighter pilot, physicist, entrepreneur, venture capitalist, author of "The All-American Boys", lecturer, and host of the radio show "Lift-off to Logic". Walter Cunningham attended UCLA.
Document 2: Stuart Roosa: Stuart Allen "Stu" Roosa (August 16, 1933 – December 12, 1994), (Col, USAF), was an American aeronautical engineer, United States Air Force pilot, test pilot, and NASA astronaut, who was the Command Module Pilot for the Apollo 14 mission. The mission lasted from January 31 to February 9, 1971 and was the third mission to land astronauts (Alan Shepard and Edgar Mitchell) on the Moon. While Shepard and Mitchell spent two days on the lunar surface, Roosa conducted experiments from orbit in the Command Module "Kitty Hawk". He was one of only 24 people to travel to the Moon.
Document 3: Wally Schirra: Walter Marty "Wally" Schirra Jr. (March 12, 1923 – May 3, 2007), (CAPT, USN), was an American naval officer and aviator, aeronautical engineer, test pilot, and one of the original seven astronauts chosen for Project Mercury, United States first effort to put humans in space. He flew the six-orbit, nine-hour Mercury-Atlas 8 mission on October 3, 1962, becoming the fifth American, and the ninth human, to ride a rocket into space. In the two-man Gemini program, he achieved the first space rendezvous, station-keeping his Gemini 6A spacecraft within 1 ft of the sister Gemini 7 spacecraft in December 1965. In October 1968, he commanded Apollo 7, an 11-day low Earth orbit shakedown test of the three-man Apollo Command/Service Module. He was the first person to go into space three times, and the only person to have flown in Mercury, Gemini, and Apollo, logging a total of 295 hours and 15 minutes in space. He retired from the U.S. Navy at the rank of Captain and from NASA after his Apollo flight, becoming a consultant to CBS News for its coverage of the subsequent Apollo flights. He joined Walter Cronkite as co-anchor for the seven Moon landing missions.
Document 4: Alan Bean: Alan LaVern Bean (born March 15, 1932), (CAPT, USN, Ret.), is an American former naval officer and Naval Aviator, aeronautical engineer, test pilot, and NASA astronaut; he was the fourth person to walk on the Moon. He was selected to become an astronaut by NASA in 1963 as part of Astronaut Group 3. He made his first flight into space aboard Apollo 12, the second manned mission to land on the Moon, at the age of thirty-seven years in November 1969. He made his second and final flight into space on the Skylab 3 mission in 1973, the second manned mission to the Skylab space station. After retiring from the United States Navy in 1975 and NASA in 1981, he pursued his interest in painting, depicting various space-related scenes and documenting his own experiences in space as well as that of his fellow Apollo program astronauts.
Document 5: Gus Grissom: Lieutenant Colonel Virgil Ivan "Gus" Grissom (April 3, 1926 – January 27, 1967) was one of the original NASA Project Mercury astronauts, a United States Air Force test pilot, and a mechanical engineer. He was the second American to fly in space, and the first member of the NASA Astronaut Corps to fly in space twice.
Document 6: Michael Collins (astronaut): Michael Collins (born October 31, 1930) (Major General, USAF, Ret.), is an American former astronaut and test pilot. Selected as part of the third group of fourteen astronauts in 1963, he flew into space twice. His first spaceflight was on Gemini 10, in which he and Command Pilot John Young performed two rendezvous with different spacecraft and Collins undertook two extra-vehicular activities (EVAs). His second spaceflight was as the Command Module Pilot for Apollo 11. While he stayed in orbit around the Moon, Neil Armstrong and Buzz Aldrin left in the Lunar Module to make the first manned landing on its surface. He is one of 24 people to have flown to the Moon.
Document 7: Theodore Freeman: Theodore Cordy "Ted" Freeman (February 18, 1930 – October 31, 1964), was an American aeronautical engineer, U.S. Air Force officer, test pilot, and NASA astronaut. Selected in third group of NASA astronauts in 1963, he was killed a year later in the crash of a T-38 jet, marking the first fatality among the NASA Astronaut Corps. At the time of his death, he held the rank of captain.
Document 8: 1966 NASA T-38 crash: The 1966 NASA T-38 crash occurred when a NASA Northrop T-38 Talon crashed at Lambert Field in St. Louis, Missouri, on February 28, 1966, killing two Project Gemini astronauts, Elliot See and Charles Bassett. The aircraft, piloted by See, crashed into the McDonnell Aircraft building where their "Gemini 9" spacecraft was being assembled. The weather was poor with rain, snow, fog, and low clouds. A NASA panel, headed by the Chief of the Astronaut Office, Alan Shepard, investigated the crash. While the panel considered possible medical issues or aircraft maintenance problems, in addition to the weather and air traffic control factors, the end verdict was that the crash was caused by pilot error.
Document 9: NASA Astronaut Group 3: Astronaut Group 3 was the third group of astronauts selected by NASA. Their selection was announced in October 1963. Fourteen astronauts made up Group 3. Four died in training accidents before they could fly in space. All of the surviving ten flew in the Apollo program; five also flew Gemini missions. Aldrin, Bean, Cernan and Scott walked on the Moon. They are the only ones of the first 19 NASA astronaut groups to have no members at all fly on the Space Shuttle.
Document 10: NASA Astronaut Group 2: NASA's Astronaut Group 2, also known as The New Nine, was the second group of astronauts selected by NASA and announced on September 17, 1962. The group was required to augment the original Mercury 7 with the announcement of the Gemini program and leading to the Apollo program. While the Original 7 had been selected to accomplish the simpler task of orbital flight, the new challenges of rendezvous and lunar landing led to the selection of candidates with advanced engineering degrees (for four of the New Nine) as well as test pilot experience. Two of this group had been candidates for the original 7, but were not selected then for medical reasons. In addition, Group 2 became the first group with civilian test pilots in the group; See flew for General Electric, while Armstrong flew the X-15 research plane for NASA.
Document 11: Gemini 9A: Gemini 9A (officially Gemini IX-A) was a 1966 manned spaceflight in NASA's Gemini program. It was the 7th manned Gemini flight, the 13th manned American flight and the 23rd spaceflight of all time (includes X-15 flights over 100 km ). The original crew for Gemini 9, command pilot Elliot See and pilot Charles Bassett, were killed in a crash on February 28, 1966 while flying a T-38 jet trainer to the McDonnell Aircraft plant in St. Louis, Missouri to inspect their spacecraft. The mission was flown June 3–6, 1966 by backup command pilot Thomas P. Stafford and pilot Eugene Cernan. The astronauts rendezvoused with the Augmented Target Docking Adaptor, but were unable to dock with it because the nose fairing failed to eject from the docking target due to a launch preparation error. Cernan performed a two-hour extravehicular activity, during which he was planned to demonstrate free flight in a self-contained rocket pack, the Astronaut Maneuvering Unit. He was unable to accomplish this due to stress, fatigue, and overheating.
Document 12: Richard F. Gordon Jr.: Richard Francis "Dick" Gordon Jr. (born October 5, 1929), (Capt, USN, Ret.), is a former American naval officer and aviator, chemist, test pilot, and NASA astronaut. He is one of only 24 people to have flown to the Moon, as the Command Module Pilot for the Apollo 12 mission.
Document 13: Elliot See: Elliot McKay See Jr. (July 23, 1927 February 28, 1966) was an American engineer, naval aviator, test pilot, and NASA astronaut, selected in the second group of astronauts. Chosen as the prime command pilot for what would have been his first space flight, Gemini 9, he was killed with his crewmate Charles Bassett in a 1966 NASA trainer jet crash at the St. Louis, Missouri McDonnell Aircraft plant, where they were to take two weeks of space rendezvous simulator training.
Document 14: Ulrich Walter: Prof. Dr. Ulrich Hans Walter (born February 9, 1954) is a German physicist/engineer and a former DFVLR astronaut.
Document 15: Riding Rockets: Riding Rockets: The Outrageous Tales of a Space Shuttle Astronaut is a 2006 book by retired astronaut Richard "Mike" Mullane. The book describes Mullane's experiences in the NASA astronaut corps from 1978 to 1990, including his flights on the Space Shuttle and his personal relationships with other astronauts, including Judy Resnik, who perished in the "Challenger" accident. The book gives a critical glimpse into the culture of NASA and the astronaut corps.
ground_truth: Ronnie Walter Cunningham