Airman 1st Class Christopher Garrison performs liquid oxygen, or LOX, servicing Nov. 6, 2013, at Atlantic City Air National Guard Base, N.J. LOX is primarily used for aviator's breathing oxygen. Garrison is an F-16C Fighting Falcon crew chief assigned to the 177th Aircraft Maintenance Squadron. (U.S. Air Force photo/Tech. Sgt. Matt Hecht)
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