Sgt. Robert N. Potenziani (right), chemical, biological, radiological and nuclear defense chief with Detachment A, Marine Wing Support Squadron 472, 4th Marine Aircraft Wing, and Lance Cpl. Eric D. Gore (left), CBRN training NCO with Headquarters Battalion, Marine Forces Reserve, check their oxygen tanks before conducting CBRN training at Camp Shelby, Miss., Nov. 17, 2015. Marines from across MARFORRES conducted CBRN training scenarios as part of a week-long Advanced Consequence Management course, which MARFORRES holds quarterly. (U.S. Marine Corps photo by Cpl. Ian Leones/Released)