Eli Ring, a team leader with Regional Contracting Logistics Support East, briefs Marines assigned to Marine Wing Headquarters Squadron 2 Chemical Biological Radiological Nuclear (CBRN) participating in a 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)