In preparation of the nation's first lunar landing mission, Apollo 11 crew members underwent training to practice activities they would be performing during the mission. In this photograph, astronaut Collins (left) and chief astronaut and director of flight crew operations, Donald K. Slayton, walk away from a T-38 jet plane at Patrick Air Force Base. The two had been flying arcs to give Collins more time under weightless conditions.
NASA, scanned by Ed Hengeveld
<a rel="nofollow" class="external text" href="https://www.hq.nasa.gov/alsj/a11/images11.html">Apollo Lunar Surface Journal</a>, <a rel="nofollow" class="external text" href="https://www.hq.nasa.gov/alsj/a11/ap11-69-H-1106HR.jpg">Image</a>