The London Police Department's K-9 Unit consists of Sgt. Jacob Bormann, handler of K-9 Jack. Both were trained by U.S. Customs Certified K-9 trainer Doug Gregory in aggressive response to identify and seek out narcotics.
K-9s must complete up to 12 weeks of narcotics training before released to work on the road with officers. Our K-9s work a maximum of eight years with the London Police Department before retirement.
https://www.youtube.com/watch?v=UYmklqzjEYI&t=24s