Men work around base of Atlas Missile 3D on launch pad 207 at Cape Canaveral, Florida. Technicians wearing headphones speak with each other. Atlas Missile 3D in Service structure is ready for launch.
Future Project Mercury astronaut Donald K. "Deke" Slayton undergoes psychological and stress test at Wright-Patterson Air Force Base, Ohio. Astronaut undergoes a treadmill test. Subject walks at a constant rate on a moving treadmill which is elevated one degree each minute. The test continues until heart beat reaches 180 beats per minute.
NASA Project Mercury astronaut candidate Lt. Hal R. Crandall, USN, undergoes equilibrium and vibration stress test at Wright-Patterson Air Force Base, Ohio. He must keep the chair upright while blind-folded, and the chair vibrates at a high-frequency.
NASA Project Mercury astronaut candidate Major Hal W. Christian, Jr., USAF, undergoes psychological and stress test at Wright-Patterson Air Force Base, Ohio. Astronaut undergoes a treadmill test. Subject walks at a constant rate on a moving treadmill which is elevated one degree each minute. The test continues till heart beat reaches 180 beats per minute. Subject sits on a stool in between the tests.
NASA Project Mercury candidate Captain James Wayne Wood, USAF, undergoes psychological and stress test at Wright-Patterson Air Force Base, Ohio. Astronaut takes an instrument in his mouth and blows air. Doctor checks his pulse and pressure wearing a stethoscope. Subject's feet dipped in ice water.
NASA Project Mercury astronaut candidate Major Hal W. Christian, Jr., USAF undergoes treadmill test at Wright-Patterson Air Force Base, Ohio. He sits on a stool while doctors take readings from an instrument.
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