U.S. Air Force Airmen with the 386th Expeditionary Maintenance Squadron combat metals flight, takes shelter in a bunker during the Air and Missile Defense Exercise 21-02 at Ali Al Salem Air Base, Kuwait, April 21, 2021. The AMDEX 21-02 is a U.S. Air Forces Central-led exercise that develops and exercises tactics, techniques, and procedures against simulated air, force protection and missile threats. U.S. participation in exercises such as this one reassures our coalition partners and allies of our commitment to the security and stability of the region. (U.S. Air Force photo by Senior Airman Kristine Legate)