David Jones is the owner and lead trainer of Hold The Line K9. In 1994 David began his career as a canine handler while serving in the U.S. Army. David also served as a canine trainer and instructor at the Department of Defense Military Working Dog School. Later David also worked at a Sheriffs Department in Missouri as a canine handler, trainer, and shift supervisor. David has also worked in the Federal Government as a explosive detection canine handler, and a canine training specialist. David has been a judge in the sport of canine nose work since 2014.