Airmen assigned to the 437th Airlift Wing and 628th Communications Squadron prepare for Chemical, Biological, Nuclear Explosives training during Crescent Reach 15, May 20, 2015. This is a local exercise, which lasted May 18-21, 2015, that tested and evaluated Joint Base Charleston's ability to launch a large aircraft formation in addition to process and deploy duty passengers along with cargo in response to a simulated crisis abroad. (U.S. Air Force photo by Senior Airman Jasmonet Jackson)