Sending distress signal
Master Sgt. Charles Pfennig, 62nd Operations Support Squadron, survival, evasion, resistance and escape specialist, teaches Carl Hess how to lay out proper distress signals Feb. 11, 2013, at Joint Base Lewis-McChord, Wash. Pfennig showed Carl the different materials that can be used and explained what the signals meant. (U.S. Air Force photo/Staff Sgt. Jason Truskowski)
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