Maj. Gen. Leslie R. Groves
Col. Jeff Nixon
Matt Cochran
Anne Cochran
Dr. J. Robert Oppenheimer
Jean O'Leary
Dr. John Wyatt
Dr. Enrico Fermi
President Franklin D. Roosevelt
Dr. Marre
Dr. Chisholm
Dr. Vannevar Bush
K.T. Keller
Gen. Thomas F. Farrell
Capt. William S. Parsons
Waitress
Radioman on Tinian Receiving A-Bomb Message
Nazi Officer