Lance Cpl. Joshua J. Bracken, a chemical, biological, radiological and nuclear defense specialist with 4th Combat Engineer Battalion, 4th Marine Division, Marine Forces Reserve, prepares to receive a chemical sample at the site of a simulated chemical warfare lab in an abandoned hotel at Pilottown, La., July 29, 2016. The training event was part of a hazardous material technician training course held by MARFORRES. (U.S. Marine Corps photo by Sgt. Ian Leones/ Released)