U.S. Air Force Master Sgt. Steven Kaun (left), USAF Military Working Dog program manager, Maj. Matthew Kowalski, 341st Training Squadron commander, and Robert Carr, Post Master of San Antonio, reveal the new stamp during the Military Working Dog Stamp ceremony Aug. 15, 2019, at Joint Base San Antonio-Medina Annex, Texas. The stamp honors dogs who have served in the U.S. armed forces since the U.S. Army created the War Dog Program K-9 Corps and began training man’s best friend in March 1942. (U.S. Air Force photo by Sarayuth Pinthong)