David J.R. Bourne or J.R. Bourne (born April 8, 1970) is a Canadian actor. He is best known as Martouf from Stargate SG-1 and Chris Argent from Teen Wolf. Bourne appeared in the NCIS Season 5 episode, Lost and Found (episode) as Metro Police Detective Marshall Collins. He also guest-starred in the NCIS: Los Angeles Season 1 episodes, "Breach" and "LD50".