Chris Shelton, branch manager for the Transportation Security Administration’s JBSA-Lackland Canine Training Center, talks to members of the government-wide working dog team about the center’s mission April 17, 2019. Annually, TSA trains about 250 canine teams at JBSA-Lackland to operate in the aviation, multimodal, mass transit, and cargo environments. (U.S. Air Force photo by Shannon Carabajal)