Cryogenics give pilots breath of fresh air
Staff Sgt. Chantz Wyant, 31st Logistics Readiness Squadron fuels facility supervisor, fills a liquid nitrogen cart, Aug. 10, 2016, at Aviano Air Base, Italy. Cryogenics Airmen fill an average of 1,200 gallons of liquid oxygen and 1,200 gallons of liquid nitrogen monthly. (U.S. Air Force photo by Senior Airman Areca T. Bell/Released)