U.S. Air Force Airman 1st Class Richard Hubbard, 31st Logistics Readiness Squadron fixed facilities personnel, walks to a cryogenic tank, April 23, 2015, at Aviano Air Base, Italy. To handle the -238 degree liquid oxygen, Airmen must wear proper personal-protection equipment, which includes safety glasses, face shields and long sleeve shirts. (U.S. Air Force photo by Senior Airman Matthew Lotz/Released)
Senior Airman Matthew Lotz
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