Air Force Airman First Class Anthony Uelk, a flight line crew chief with the 932nd Maintenance Group, uses a fuel sump bottle to check for any contaminants before refueling a C-40 Clipper aircraft in preparation for takeoff, Jan. 31, 2019, at Scott Air Force Base, Illinois. The polar vortex, that caused many record low temperatures throughout the nation, didn't prevent citizen Airmen from completing their tasks and launching aircraft.

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Size: 1732px × 1155px
Photo credit: © Nelly George / Alamy / Afripics
License: Licensed
Model Released: No

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