Peterson high altitude chamber
PETERSON AIR FORCE BASE, Colo. – Capt. James Outland, 54th Helicopter Squadron from Minot Air Force Base, N.D., gets fitted for a mask before entering the high altitude chamber at the Aerospace and Operational Physiology Lab on Dec. 10, 2015. The high altitude chamber, one of 11 in the Air Force, gives pilots and aircrew members an understanding of how the human body reacts to altitudes and low oxygen. (U.S. Air Force photo by Senior Airman Rose Gudex)