Army and Air National Guardsmen establish drop zones for over head UH-60 Blackhawk helicopters during Pathfinder school at Camp Gruber Training Center, near Braggs, Okla., May 17, 2017. Trainees were required to show proficiency in using marked, verbally initiated and computer air release systems for retrieving air dropped supplies.

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Size: 1733px × 1154px
Photo credit: © Ted Small / Alamy / Afripics
License: Licensed
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