'Air' Force
Randy Trotter trains Dung Tran on a purge eater, which pushes cold air in, heats it and then pushes it back out. The instrument mechanics are part of the 550th Commodities Maintenance Squadron’s Oxygen Maintenance Depot. (Air Force photo by Kelly White)

Download Image: Full Size (2.02 MB)
Tags: OC-ALC
Photo by: Kelly White |  VIRIN: 140620-F-JJ999-060.JPG