David retired from the Clifton New Jersey Police Department in 2012, after 34 years of distinguished service. During his last 10 years of service he was assigned as the Clifton Police Department’s Range Master. David is one of the founding members of the Tactical Response Team which was formed in 1983, where he served as an Operator, Team Leader and the team’s lead Firearms and Tactics Instructor. He has trained law enforcement and military personnel throughout the country as one of the original adjunct instructors with Heckler & Koch’s International Training Division from 1990 through 2002. He has been instructing with Team One Network since its inception.