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 Mac Brandt as Mall Security Guard Bobby Hosea as Hospital Soldier Co Starring Sean Carrigan as Devon Alexandra Bokyun Chun as Dr. Lu Ashleigh Sumner as Jarvis' Secretary Eva Charles Halford as Roman Glenn Herman as Armed Soldier Noshir Dalal as Police Officer #1 Jesus Ruiz as Commander Charles Carpenter as Diaz David L. King as Presidential Aide Anthony Nacarato as Hayes Reggie Jordan as NSA Signals Analyst Michael Dean Connolly as Soldier