Cryogenics give pilots breath of fresh air
(From left) Airman 1st Class Aaron Debolt and Staff Sgt. Chantz Wyant, 31st Logistics Readiness Squadron fuels facility personnel, fill 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)