Norman Gates (AKA "Boom Boom") is a reserved Gunnery Sergeant in the United States Marine Corps and also an explosive expert with the NCIS: Hawaii team as well as a member of the Explosive Ordnance Disposal- EOD unit in Hawaii.
Biography[]
Pre-Series[]
NCIS: Hawaii Season 1[]

Boom Boom in the NCIS: Hawaii Season 1 episode, "Boom".
"Boom Boom" made his debut appearance in the NCIS: Hawaii Season 1, Boom (NCIS: Hawaii episode) where he was first seen at a field in the Marine Corps Air Station Kaneohe Bay or K-Bay, demonstrating some explosions to NCIS Special Agents Jane Tennant and Kai Holman.