Cast
Brian DonlevyMaj. Gen. Leslie R. Groves
Robert WalkerCol. Jeff Nixon
Tom DrakeMatt Cochran
Beverly TylerAnne Cochran
Hume CronynDr. J. Robert Oppenheimer
Audrey TotterJean O'Leary
Hurd HatfieldDr. John Wyatt
Joseph CalleiaDr. Enrico Fermi
Godfrey TearlePresident Franklin D. Roosevelt
Victor FrancenDr. Marre
Richard HaydnDr. Chisholm
Jonathan HaleDr. Vannevar Bush
John LitelK.T. Keller
Henry O'NeillGen. Thomas F. Farrell
Warner AndersonCapt. William S. Parsons
