A litter of puppies from the Defense Department's Military Working Dog Breeding Program play at the center on Lackland Air Force Base in San Antonio. DOD photo by Linda Hosek A litter of puppies from the Defense Department's Military Working Dog Breeding Program play at the center on Lackland Air Force Base in San Antonio. DOD photo by Linda Hosek SHARE: Download: Full Size (2.32 MB) Credit: VIRIN: 191954-D-NEI83-396.jpg Photo Gallery