Airmen tread water during a water-survival refresher course in the base pool at Hurlburt Field, Fla., Jan. 27, 2014. The aircrew must tread water for five minutes before successfully escaping a simulated rotary-wing aircraft submerged in water. (U.S. Air Force photo/Senior Airman Naomi Griego)
Airman 1st Class Naomi Griego
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