Guest Stars Blue Deckert as General Armbruster Roger Bart as Chief of Staff Richard Peel Sam Ball as Aaron Hal Holbrook as James Dempsey Virginia Madsen as Senator Catherine Lewis Lane Garrison as Dempsey's Man David Andriole as Senator Lewis' Aide J.D. Cullum as Herbert Mills Co Starring Sean Carrigan as Devon Alexandra Bokyun Chun as Dr. Lu Ashleigh Sumner as Jarvis' Secretary Eva Kelli Kirkland Powers as Presidential Aide Noel Arthur as Luis Patrick Quinlan as Aide Eric Watkins Greg Wrangler as Detail Leader Melissa Bickerton as Nurse Baldeep Singh as Agent Johnson Jodi Fleisher as Stephanie Gregg Sargeant as Dempsey Guard