Black Flag 2015
Airman Marlene Zeledon (left) and Staff Sgt. Jonathan Moroz (right) discover a munitions stockpile in a mock chemical lab for a training exercise in the Memorial Tunnel at the Center for National Response in Gallagher, WV., March 17, 2015. This training is part of the annual Black Flag exercise for first responders. Zeledon is an 11th Civil Engineer Squadron emergency management journeyman and Moroz is the 779th Aerospace Medical Squadron non-commissioned officer in-charge of bioenvironmental training Joint Base Andrews, Md. (U.S. Air Force photo/Airman 1st Class Joshua R. M. Dewberry)

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