Staff Sgt. Curtis Locke, 28th Security Forces Squadron military working dog trainer, and Marko, 28 SFS military working dog, demonstrate searching a trunk for illegal contraband in a privately owned vehicle here, August 13. A unique military working dog program offers Airmen a chance to have a drug detector dog search a used vehicle or a rental within 30 days of receipt. (U.S. Air Force photo/Senior Airman Kasey Zickmund)