OFFUTT AIR FORCE BASE, Neb. -- Senior Airman Nicholas Simon, a fuels facilities technician with the 55th Maintenance Squadron's Fuels Management Flight, purges a hose attached to a liquid oxygen tank in order to remove impurities prior to filling a portable oxygen cart, March 2. (U.S. Air Force photo/Josh Plueger)

Download Image: Full Size (0.95 MB)
Photo by: Josh Plueger |  VIRIN: 100302-F-7797P-002.JPG