Mark (Yankee White)

Mark is a Director of the United States Secret Service.
==Biography==
===Pre-Series===
===NCIS Season 1===
==Personality==
==Physical Appearance==
==Trivia==
*Lawrence Pressman who played Mark later went on to play Doctor Russell Pike in the NCIS Season 4 episode, Driven (episode).
Category:Americans in NCIS
Category:NCIS articles whose full names are not known
Category:One-Off NCIS Characters
Category:Secret Service Personnel in NCIS