Tech. Sgt. Thomas M. Hannes, 92nd Medical Operations Squadron NCO in charge of ambulance services flight, demonstrates how to use the loudspeaker and driver controls of a base ambulance, Aug. 18, 2016, at Fairchild Air Force Base, Wash. Fairchild EMTs also maintain a precautionary presence at all base events and tenant unit training exercises. (U.S. Air Force photo/Airman 1st Class Ryan Lackey)