David has over 18 years of law enforcement experience. He was assigned to the training academy as a firearms instructor where he was the lead instructor for the cadet training program, patrol rifle, pistol RDS, LPVO and designated marksman. He was previously assigned to patrol, Problem Oriented Policing (POP), Street Crimes Unit (SCU) and Tactical Medic Unit.

David served over 10 years as a Reconnaissance Marine where he served multiple roles including team leader, designated marksman, demolitions man, and radio operator. He began his career as an instructor during the pilot program for the Marine Reconnaissance pipeline (RMAT/MART) where he instructed and prepared junior marines in multiple fields from PT readiness, swimming, land nav, amphibious operations, and patrolling, readying them to attend and pass the Basic Reconnaissance Course (BRC) He was also a Primary Marksmanship Instructor (PMI) where he instructed and qualified Marines on multiple weapons platforms, rifle, pistol, and heavy weapons. David deployed multiple times to Iraq and Afghanistan with the Marine Corps and again with the Defense Intelligence Agency (DIA) where he was part of an intelligence and security detail. He trained civilian and military intelligence personnel attached to the agency in firearms, tactics, medical, and driving.

David is an avid competitive shooter in IDPA, USPSA, 3-gun, PRS, and sporting clays. He continually attends various shooting and instructor development courses throughout the year and is always a student first.