Dr. J. Allen Hynek
Captain Michael Quinn
Mimi Hynek (credit only)
Susie Miller (credit only)
General Hugh Valentine (as Michael J. Harney)
General James Harding
Lt. Col. Yuri Obolensky
Alex
Vice Marshall Christopher Thomas
John F. Kennedy
Faye
Darren
James
Jean
Greg
Dark-Suited Man
Soldier (as Jordan Cameron)