One piece of the maintenance puzzle: the crucial role of E & E

A liquid oxygen tank sits on the flight line before a scheduled inspection and cleaning at Barksdale Air Force Base, La., Oct. 30, 2018. The tanks must be purged of contaminants using a process involving hot air, before they are refilled with liquid oxygen for B-52 Stratofortress aircrews to have breathable air while in high altitudes. (U.S. Air Force photo by Airman 1st Class Sydney Campbell)

PHOTO BY: Airman 1st Class Sydney Campbell
VIRIN: 181030-F-MX995-1016.JPG
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