A chemical, biological, radioactive, and nuclear defense specialist with the 24th Marine Expeditionary Unit gets comfortable in a Trellchem level-B training suit during a hazardous materials equipment class aboard the amphibious assault ship USS Iwo Jima (LHD 7), Jan. 15, 2015. The 24th MEU is embarked on the ships of the Iwo Jima Amphibious Ready Group and deployed to maintain regional security in the U.S. 5th Fleet area of operations. (U.S. Marine Corps photo by Lance Cpl. Austin A. Lewis)