Brian Duncan, a counter radio-controlled electronic warfare (CREW) senior engineer with International Joint Command, instructs students on the proper usage, theory and maintenance of CREW systems at Bagram Air Field, Afghanistan, on March 29, 2014. CREW systems, commonly referred to as ‘jammers’, are constantly being updated and improved. (U.S. Army photo by Sgt. Jarred Woods 1st Sustainment Command (Theater).)
<br>Unit: 1st Sustainment Command (Theater) Public Affairs
Sgt. Jarred Woods
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