Senior Airman Dieu Luong, 317th Operations Support Squadron aircrew flight equipment technician, right, helps secure the gas mask of Airman 1st Class Tristan Roe, 317th OSS aircrew flight equipment technician, during Exercise Chemical Fury at Dyess Air Force Base, Texas, Nov. 17, 2020. During the exercise, Airmen donned mission-oriented protective posture, or MOPP, gear to prevent the simulated chemicals from contaminating them. (U.S. Air Force photo by Senior Airman Mercedes Porter)