U.S. Air Force Tech. Sgt. Ryan Hyslop, Air Force Global Strike Command Det. 4 survival, evasion, resistance and escape specialist, left, teaches U.S. Air Force Senior Airman Tyler Lewellen, AFGSC Det. 4 aerospace ground equipment journeyman, middle, and U.S. Air Force Staff. Sgt. Bryce Weaver, AFGSC Det. 4 unit training manager, right, how to properly tie a knot July 27, 2017, at Andersen Air Force Base, Guam. The SERE course taught jungle-specific survival techniques to individuals at risk of being isolated in a jungle environment. (U.S. Air Force photo by Airman 1st Class Christopher Quail)
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