The seven original Mercury astronauts participate in U.S. Air Force survival school at Stead Air Force Base in Nevada. Picture from left to right are 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) More over here.