U.S. Air Force Airman 1st Class John Dennis, 633rd Surgical Operations Squadron diagnostics imaging technologist, prepares to perform an x-ray, at Joint Base Langley-Eustis, Va., Feb. 21, 2017. During their visit to the radiology department, patients are brought back to a room, where they are informed and positioned for their procedure. The decision on the appropriate technique, as far as how much radiation and radiation power to use, is made by the technologist. (U.S. Air Force photo/Senior Airman Areca T. Bell)