The seven original Mercury astronauts participate in U.S. Air Force survival school at Stead Air Force Base in Nevada. From left to right: L. Gordon Cooper Jr., M. Scott Carpenter, John H. Glenn Jr., Alan Shepard, Virgil I. Grissom, Walter M. Schirra Jr., and Donald K. Slayton. Portions of their clothing have been fashioned from parachute material, and all have grown beards from their time in the wilderness. The purpose of this training was to prepare astronauts in the event of an emergency or faulty landing in a remote area. (NASA)
Go look at all of these. So, so cool.