U.S. Air Force Staff Sergeant Matthew Titus, 633rd Security Forces Squadron military working dog handler, participates in a military working dog demonstration during a school fair at Bethel Manor Elementary School in Yorktown, Va., May 20, 2017. Max, 633rd SFS military working dog, showed his ability to follow a variety of commands and to act without instruction if his handler is in danger. (U.S. Air Force photo/Airman 1st Class Anthony Nin Leclerec)