An airman from the 133rd Airlift Wing ignites a smoke flair used to signal the Black Hawk helicopter for combat and water survival training in Arden Hills, Minn., June 18, 2013.
(U.S. Air National Guard photo by Staff Sgt. Austen Adriaens/Released)
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ARDEN HILLS, MN, US
This work, Smoke Signals [Image 1 of 14], by TSgt Austen Adriaens, identified by DVIDS, is free of known copyright restrictions under U.S. copyright law.