U.S. Marines don Mission Oriented Protective Posture (MOPP) gear for Chemical, Biological, Radiological, and Nuclear (CBRN) defense training during Arctic Care 2021 in Kodiak, Alaska, on May 7, 2021. Arctic Care 2021 is a joint-service training mission led by the United States Air Force and supported by members of the Air National Guard, Marines, Marine Reserves, Navy, Navy Reserves, National Guard, and Army Reserves. (U.S. Marine Corps photo by Lance Cpl. James Stanfield)