Mark Casimir Dyniewicz Jr.

Mark Casimir Dyniewicz Jr. (born April 29, 1971) is an actor who appeared in the NCIS: Los Angeles Season 3 episode, The Debt (episode) as Aryan Gang Member and the NCIS: Los Angeles Season 6 episode, Spiral (episode) as Terrorist.
He later guest-starred in the NCIS Season 15 premiere episode, House Divided (episode) as Zachary Brooks.
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