Staff Sgt. Omar Vargas, Combat Casualty Care Course instructor, attempts to self-rescue during the rappel masters certification course Nov. 5, 2010, at Camp Bullis, Texas. Individuals attending the five-day rappel course learn 13 different knots, how to self-rescue if stuck, and descend down the wall and free side safely. ( Air Force photo/Staff Sgt. Jonathan Snyder)(RELEASED) Flickr - DVIDSHUB - Give it all you got (Image 5 of 12)

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Photo credit: © PJF Military Collection / Alamy / Afripics
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Keywords: air, airmen, armed, conflict, force, forces, master, military, rappel, rappelling, security, states, united, war