Breathing oxygen
SOUTHWEST ASIA -- Staff Sgt. Anthony Anderson (left) and Tech. Sgt. William McLeod attach a cryogenic supply hose to an oxygen servicing cart. Oxygen remains in a liquid form at temperatures below minus 297 degrees Fahrenheit. At ambient temperatures, the oxygen boils and releases air-breathable oxygen, which is normally used in pressurized aircraft. Both airmen are at a forward-deployed location. Anderson is from the 60th Logistics Readiness Squadron at Travis Air Force Base, Calif., and McLeod is from the 99th Supply Squadron at Nellis AFB, Nev. (U.S. Air Force photo by Master Sgt. Lance Cheung)
PHOTO BY:
Master Sgt. Lance Cheung
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