U.S. Marine Corps Sgt. Vincent Smith, a squad leader

U.S. Marine Corps Sgt. Vincent Smith, a squad leader with Chemical, Biological, Radiological, and Nuclear Defense platoon, Headquarters Battalion, 3d Marine Division, removes his hazardous material level B suit during Exercise Habu Sentinel on Camp Courtney, Okinawa, Japan, Dec. 9, 2019. Exercise Habu Sentinel allows CBRN response platoon the opportunity to conduct progressive responses based off of intelligence feedback from conditions on the battlefield. This training gives Marines valuable, real-life scenarios and promotes combat readiness. Smith is a native of Lindy, Ill. (U.S. Marine Corps photo by Lance Cpl. Christine Phelps)