A Midshipman breaks the seal of his M50 joint service general purpose mask while conducting chemical biological radiological and nuclear defense training during Career Orientation for Midshipmen (CORTRAMID) on Camp Lejeune, N.C., July 28, 2015. The purpose of CORTRAMID is to expose midshipmen to opportunities in the Fleet Marine Forces and generate interest in pursuing a Marine Corps commission. (U.S. Marine Corps photo by Cpl. Allison DeVries, MCIEAST-MCB CAMLEJ Combat Camera/Released)