Sunny, a 325th Security Forces Squadron military working dog, bounds up a cement staircase obstacle at Tyndall Air Force Base, Florida, March 3, 2020. Sunny and his handler, Staff Sgt. Jason Vogt, begin their regular duty days with cardio exercise running an enclosed obstacle course. This photo was taken while doing a demonstration for K-9 Veterans Day. (U.S. Air Force photo by 2nd Lt. Kayla Fitzgerald)