Marines from Marine Forces Reserve participate in a chemical, biological, radiological and nuclear defense training simulation aboard Naval Air Station Joint Reserve Base New Orleans, Feb. 5, 2015. Selected Marines from units throughout MARFORRES received the five-day CBRN training. Upon completion of training, the Marines are expected to return to their units and teach what they learned to other Marines. The CBRN defense training equips Marines from diverse units, with the proper knowledge and readiness needed to handle a real combat zone situation. (U.S. Marine Corps photo by Lance Cpl. Ian Ferro)