William Tannen

as Mack Bryant - Dept. of Immigration (uncredited)

as Devon

as O'Connor

as Director

as Commander (uncredited)

as Driggs

as FBI Chemist

as Police Lab Technician Wilson (uncredited)

as McKay's Assistant (uncredited)

as Joseph

as Flag Lt. Dudley

as Devlan

as Ludwig

as Ellis

as Intern Fenwick

as Robert Graves

as Fred Sutton

as Lieut. Freddy Townsend