A U.S. Marine with 2d Marine Logistics Group (2D MLG) reads instructions for the M256 Chemical Agent Detector Kit during 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 learned to operate the M256. (U.S. Marine Corps photo by Lance Cpl. Desire M. Mora/Released)