Matt Sigloch is an actor who appeared in the NCIS Season 1 episode, Reveille (episode) as Man (Reveille). Sigloch who played the unnamed Man is a real-life Marine, having retired from the United States Marine Corps after serving with them for twenty-two years. In addition to being an actor, Sigloch also acts as a technical and also military adviser for various shows including NCIS's parent series, JAG and also NCIS itself with Sigloch being the adviser for NCIS from 2003 to 2013.