U.S. Marines with 2d Marine Logistics Group (2D MLG) participate in monitor survey reconnaissance 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)