Prime crew of the Skylab 2 mission stand beside T-38 prior to take off

S73-25714 (13 May 1973) --- Members of the prime crew of the first manned Skylab Mission (Skylab 2) stand beside a NASA T-38 jet aircraft trainer at nearby Ellington Air Force Base prior to take off for the Kennedy Space Center, Florida. They are (left to right) astronauts Paul J. Weitz, mission pilot; Charles Conrad Jr., commander; and scientist Joseph P. Kerwin, science pilot. The three crewmen have completed their prelaunch training at JSC. Photo credit: NASA