"During Vietnam both the Air Force and Navy made amphetamines available to aviators. Intermittently since Vietnam up through Desert Storm the Air Force has used both amphetamines and sedatives in selected aircraft for specific missions."
Source
"Performance Maintenance During Continuous Flight Operations: A Guide For Flight Surgeons," NAVMED P-6410, Naval Strike and Air Warfare Center, Jan. 1, 2000, p. 8.
http://www.med.navy.mil/direc…
