A U.S. Marine with 2d Marine Logistics Group (2D MLG) puts on the M50 Joint Service General Purpose Mask during monitor survey recconnaisance training with 2D MLG Chemical Biological Radiological Nuclear (CBRN) Marines on Camp Lejeune, N.C., Aug. 20, 2014. During the training, the Marines operated the M256 Chemical Agent Detector Kit. (U.S. Marine Corps photo by Lance Cpl. Desire M. Mora/Released)