William Harrigan

as Gus

as Inspector Hansen

as John 'Mac' McNamara

as Dr. Lt.Cdr. Joe Curran

as Berle Lindquist

as Ward Hughes

as Jimmy Dobson

as Union Commanding Officer

as Frankie's Father

as Blake

as Grant Powell

as Federal Agency Chief

as Jim Shelly

as Curley

as 'Doc' Evans

as Charles Murfree

as Captain Jonesy

as Updyke

as 'Mac' McKay

as Dr. Arthur Kemp

as Captain Holloway

as Peter Lawton

as Jim Richards

as Cap

as Danny Madden

as Good News Brophy

as Jack Costigan