U.S. Air Force Staff Sgts. James Brumbaugh, left, and Taj Copeland move a liquid oxygen cart during a cryogenic refill on Bagram Airfield, Afghanistan, Sept. 5, 2014. Brumbaugh is a fuels cryogenics noncommissioned officer in charge and Copeland is a fuels distribution supervisor assigned to the 455th Expeditionary Logistics Readiness Squadron. U.S. Air Force Staff Sgts. James Brumbaugh, left, and Taj Copeland move a liquid oxygen cart during a cryogenic refill on Bagram Airfield, Afghanistan, Sept. 5, 2014. Brumbaugh is a fuels cryogenics noncommissioned officer in charge and Copeland is a fuels distribution supervisor assigned to the 455th Expeditionary Logistics Readiness Squadron. SHARE: Download: Full Size (2.31 MB) Tags: Photo Essays Credit: VIRIN: 645296-U-HAN29-575.jpg Photo Gallery