Became a research officer in the Aeromedical Laboratory of Wright Field, Ohio in 1946 where he studied problems of escaping from aircraft at high altitudes.
Provided the effectiveness of a liquid oxygen breathing system and established preventative measures for high altitude bends and dehydration.
Set out to find why some Air Force men died and others survived seemingly equally violent crashes. At Muroc AFB, California, he personally made 26 rocket-powered sled runs to test human reactions to high rates of acceleration (35 times that of gravity) and deceleration.
At Holloman AFB, New Mexico, he attained a ground speed record at 636 mph in 1953 in a higher powered rocket sled, slamming to a stop in 1.25 seconds.
Proved that an ejection seat could be used safely at supersonic speeds.
Invited representatives of the military and auto industry to review his research on the necessity of seat belts in 1954.
Became a consultant to the Surgeon General of the United States and NASA after retiring from the military in 1970.