Cryogenic shop brings cool breeze to AOR
Staff Sgt. Michael Dietz, 379th Expeditionary Logistics Readiness Squadron cryogenics technician, pulls a sample of liquid oxygen from a cart. When the liquid oxygen boils off, Sergeant Dietz does an odor test to ensure the sample is pure. (U.S. Air Force photo/Staff Sgt. Nika Glover)