OMAN (February 18, 2023) – U.S. Marines assigned to Fleet Anti-Terrorism Security Team Central Command (FASTCENT) and members of the Royal Omani Police Special Task unit practice clearing multi-floor structures during close quarter combat (CQB) training as part of exercise Invincible Sentry 23 in Oman, Feb 18. IS23 is a recurring exercise held with different partner nations each year within U.S. Central Command’s area of responsibility to evaluate the readiness and capabilities of U.S. and Omani forces responding to a regional emergency. (U.S. Marine Corps photo by Staff Sgt. Benjamin McDonald)