U.S. Marines with Recapture Tactics Team, Marine Corps Security Force Regiment, and British Royal Marines with 43 Commando Fleet Protection Group Royal Marines refine indoor room-clearing techniques during exercise Tartan Eagle 2021 at Naval Support Activity Northwest Annex, Chesapeake, Virginia, Sept. 22, 2021. This exercise allowed U.S. Marines to work alongside British Royal Marines in a similar occupation field to conduct movement-to-contact and indoor close-quarters battle drills. Exercise Tartan Eagle is a bilateral biyearly training exercise for the U.S. Marines and British Royal Marines to train close-quarters battle strategy and tactics. (U.S. Marine Corps video by Sgt. Kealii De Los Santos and Lance Cpl. Angel Alvarado)

U.S. Marines with Charlie FAST Company, 5th Platoon, Marine Corps Security Forces, U.S. Marine Corps Forces Command, Fleet Marine Force Atlantic, reinforces an embassy during a Mission Readiness Exercise (MRX) Jan 12, 2021, on Fort A. P. Hill in Port Royal, Virginia. Fleet Antiterrorism Security Team (FAST) platoons execute MRX exercises prior to deployment to evaluate the platoons’ proficiency in core mission essential tasks. (U.S. Marine Corps video by Sgt. Kealii De Los Santos/Released)