According to Wikipedia,
Keith Szarabajka is an American actor. He is best known for his roles as Mickey Kostmayer on The Equalizer, Daniel Holtz on Angel, Gerard Stephens in The Dark Knight and Adam Engell in Argo. He has also voiced Dr. Terrence Kyne in Dead Space, Harbinger in Mass Effect 2, Herschel Biggs in L.A. Noire and the Didact in Halo 4.
Keith Szarabajka is affiliated with the following schools: