U.S. and Qatari Special Operations Forces encounter a gunman role-player, March 24, 2021, during U.S. Central Command’s crisis response exercise Invincible Sentry in Doha, Qatar. The annual bilateral exercise represents a unique opportunity to train with Qatari partners to exercise critical crisis response capabilities. (U.S. Navy photo by Mass Communication Specialist 2nd Class Alex L. Smedegard)