'Air' Force
As the room fills with “smoke,” Bradley Lange and Zach McCain make sure converters are being filled with liquid oxygen safely and correctly in the Oxygen Maintenance Depot’s Fill Room. The employees who work in this room have to wear the required safety gear because liquid oxygen’s freezing point is 50.5K, or -368.77 Fahrenheit. (Air Force photos by Kelly White)

Download Image: Full Size (1.67 MB)
Photo by: Kelly White |  VIRIN: 140620-F-JJ999-040.JPG