A nuclear advanced designated marksman from the 341st Security Support Squadron Tactical Response Force watches as a helicopter offloads other members in support of a launch facility recapture exercise during Global Thunder 19, Oct. 30, 2018, at Malmstrom Air Force Base, Mont. Global Thunder involves extensive planning and coordination and provides unique training opportunities and assessments for all U.S. Strategic Command mission areas and joint and field training operational readiness, with a specific focus on nuclear readiness. The training is based on a notional scenario exercise to test readiness and ensure a safe, secure, ready and reliable strategic deterrent force. (U.S. Air Force photo by Beau Wade)