Rubuta ci gaba don wannan sakin layi - Wani memba na Screen Actors Guild, AFTRA, da kuma Ma'aikatan 'Yan wasan kwaikwayo, Marshall ya bayyana a manyan ayyuka a kan ayyukan da dama, ciki har da Kyaftin Richard Phillips
a cikin "Kunkurin 'Yan fashin teku na Somaliya: Labarin Gaskiya" don Tashar Discovery. Sauran manyan matsayin sun hada da FDNY Kyaftin Jay Jonas a cikin lambar yabo ta Emmy "Countdown to Ground Zero" don Tashar Tarihi da kuma rawar da John Zaffis ya taka a cikin "A Haunting" don Tashar Discovery. Ayyukan wasan kwaikwayon sun haɗa da Off-Broadway da Baltimore Hippodrome na wasan kwaikwayo na wasan kwaikwayo na Ken Davenport mai suna "The Awesome 80s Prom" a matsayin Babban Daraktan Snelgrove. Marshall kuma memba ne na Dramatists Guild, kuma wasan kwaikwayonsa "41N 50W" ya kasance farkon duniya a watan Oktoba 2012 a gidan wasan kwaikwayo na St. James na London.