Maj. Stacey Walker assigned to the 48th Medical Operation Squadron, prepares an IV solution bag during Mission Assurance Exercise 20-20 at Royal Air Force Feltwell, England, Sept. 29, 2020. During the exercise, medical personnel received unique training and challenged their proficiency, practicing medical skills and procedures while treating simulated injuries in a forward operating location. (U.S. Air Force photo by Airman 1st Class Rhonda Smith)