Tech. Sgt. Rebekah Underwood, a knowledge operations technician with the 442d Communications Flight, dons mission-oriented protective posture level 3 during a wing level readiness exercise, Ozark Thunder 20-01, at Whiteman Air Force Base, Mo., Nov. 3, 2019. During the exercise, Airmen participated in chemical warfare training and self-aid buddy care training while also performing their normal job duties to validate the wing’s ability to perform mission essential tasks during contingency operations. (US Air Force photo by Senior Airman Taylor Davis)