From elementary school coach, to behind bars. That's what happened to Antonio Mendez Jr, 49 years old. One of Constable Devally's deputies was conducting a traffic stop in south Laredo and after consent from Mendez, searched the vehicle with his K-9. The dog immediately alerted the officer to a pair of work boots and after further inspection, found 1.09 kilograms of black tar heroin inside the soles of the boots. "Having a K9 unit, it's helped out this office as far as going out there and doing our part on the war on drugs and keeping these drugs out before they hit the street or before they get into our schools for our kids." Mendez served as a coach for Farias Elementary School, but according to school officials he was terminated after this incident. "It's a legal matter right now. We are very disappointed in that young man's decision and we'll let the process play out in court but he is no longer associated with LISD.” Constable Devally said this is the first time precinct four has had a K-9 unit, and it is proving to be useful. "When I took office, one of my objectives or goals here was to form a K9 unit to fight the war on drugs and that was one of the reasons I wanted to get it." This was K-9 Andy's first drug bust of his career.