U.S. Army Staff Sgt. Michael Suiters, a flight engineer

U.S. Army Staff Sgt. Michael Suiters, a flight engineer assigned to Bravo Company, 2-4 General Support Aviation Battalion (GSAB), checks a CH-47F Chinnook before flight during exercise Vibrant Response 14 at Camp Atterbury, Ind., July 22, 2014. Vibrant Response is a Defense Chemical, Biological, Radiological, and Nuclear Response Force (DCRF) training event. The exercise focuses on Department of Defense support of civil authorities in a consequence management role. The DCRF is part of DOD's scalable response capability to assist civilian responders in saving lives, relieving human suffering and providing critical support community recovery following a catastrophic CBRN incident. (U.S. Air Force photo by Senior Airman Jasmonet Jackson/ Released)