U.S. Air Force Staff Sgt. Terrance Thomas, 633rd Medical Group emergency technician, finishes an ambulance equipment check at Joint Base Langley-Eustis, Va., Jan 13, 2017. While at an emergency scene, the ambulance services work side-by-side with the 633rd Civil Engineer Squadron fire department and the 633rd Security Forces Squadron personnel who would also respond to the 911 call. (U.S. Air Force photo by Airman 1st Class Tristan Biese)