U.S. Marines assigned to 1st Battalion, 6th Marine Regiment, currently attached to 3rd Marine Division, perform speed drills during a crew-served weapons competition at Camp Schwab, Okinawa, Japan, March 3, 2020. A crew-served weapon is any weapon that requires two or more people to operate. The competition was held to identify the best crew-served weapons teams in the battalion. (U.S. Marine Corps video by Cpl. Brandon Salas)