The seven NASA transfers under the age limit did not go through a selection process. Some immediately started working for the agency, and others in 1970 after a year of further education. They had not trained for specific MOL missions but had received useful generic training, including jungle and water survival and
Scuba school, and helped develop MOL systems. While Slayton warned the MOL transfers that they would probably not fly until the space shuttle around 1980, he did have many duties for them. The first step was selection to a mission support crew. Fullerton served on the support crews for the Apollo 14 and 17 lunar landing missions, Hartsfield and Peterson on that of Apollo 16, and Overmyer on that of Apollo 17, and they performed CAPCOM duties on those missions. Fullerton was also CAPCOM on Apollo 15 and 16. Crippen, Hartsfield and Truly served on the support crews for the Skylab missions, and Bobko, Crippen, Overmyer and Truly served on that of the Apollo-Soyuz Test Project. On February 24, 1976, NASA announced the two crews of two astronauts to fly the
Approach and Landing Tests in the . In each case, one of the MOL astronauts was paired with an experienced member of
NASA Astronaut Group 5. The commander of the first crew was
Fred Haise, with Fullerton as pilot, and the second was commanded by
Joe Engle, with Truly as pilot. By this time, only 31 of the 73 pilot and scientist astronauts selected between 1959 and 1969 remained with NASA, and they would soon be outnumbered by the
35 newcomers selected in 1978. All seven MOL astronauts flew on the Space Shuttle, starting with Crippen on STS-1, the first mission, in April 1981. The pattern of a senior astronaut flying as command with a member of the seven MOL astronauts as pilot was followed for the first six shuttle missions, after which all members of the group had flown. Although they had trained for Gemini spacecraft in which they would work in pairs, the April 1983 STS-6 mission was the only one in which two of them flew on the same mission. Peterson's extravehicular activity on that mission, the first in the Space Shuttle program, was the only one conducted by a member of the group. All the others would fly at least one more mission, as the mission commander, before they retired. Hartsfield commanded the last mission flown by a member of the group,
STS-61A, in October and November 1985. The group flew 17 missions in total. ==Notes==