On The Job With The Capital Guardians
An Airman with the 113th Maintenance Squadron fills an F-16 Fighting Falcon with liquid oxygen at Joint Base Andrews, Md., March 27, 2017. Liquid oxygen is used to provide oxygen to pilots when they are above 10,000 feet, during flight. (U.S. Air Force photo by Airman 1st Class Gabrielle Spalding)

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Photo by: Airman 1st Class Gabrielle Spalding |  VIRIN: 170327-F-PS661-0147.JPG