Guest Stars Blue Deckert as General Armbruster Roger Bart as Chief of Staff Richard Peel José Zúñiga as Carlos Geller Dondre T. Whitfield as Agent Mike Garret Ned Vaughn as Dr. Reed Angela Gots as Alexandra David Andriole as Senator Lewis' Aide Bobby Hosea as Hospital Soldier Mac Brandt as Mall Security Guard Co Starring Sean Carrigan as Devon Alexandra Bokyun Chun as Dr. Lu Ashleigh Sumner as Jarvis' Secretary Eva Charles Halford as Roman Noshir Dalal as Police Officer #1 David L. King as Presidential Aide Charles Carpenter as Diaz Glenn Herman as Armed Soldier Michael Dean Connolly as Soldier Reggie Jordan as NSA Signals Analyst Jesus Ruiz as Commander Anthony Nacarato as Hayes