A glow stick is placed in a cart used by Marines assigned to Marine Wing Headquarters Squadron 2 participating in a Chemical Biological Radiological Nuclear (CBRN) training exercise on Marine Corps Air Station Cherry Point, N.C., Jan. 22, 2015. CBRN Marines practiced reconnaissance and extraction scenarios designed to simulate real life situations with hazardous materials. (U.S. Marine Corps photo by Lance Cpl. Jodson B. Graves/Released)