Billy Crystal

as Lt. Jacob 'Jake' Beser

Kim Darby

as Lucy Tibbets

Patrick Duffy

as Col. Paul Tibbets

Gary Frank

as Maj. Tom Ferebee

Gregory Harrison

as Capt. Bob Lewis

Stephen Macht

as Maj. William 'Bud' Uanna

Walter Olkewicz

as Sgt. Shug Crawford

Robert Pine

as Capt. William 'Deke' Parsons

James Shigeta

as Field Marshal Abehata

Robert Walden

as J. Robert Oppenheimer

Richard Venture

as Alexander Sachs

Richard Herd

as Gen. Groves

Henry Wilcoxon

as Secretary of War Stimson

Ed Nelson

as President Harry S. Truman

Stephen Roberts

as President Franklin D. Roosevelt

Michael Tucci

as Capt. Claude Eatherly

Than Wyenn

as Gen. Curtis LeMay

Stephen Burleigh

as Theodore Van Kirk

Marion Yue

as Aya

Bill Morey

as Gen. George Marshall

John Fujioka

as Gen. Nagai

James Saito

as Lt. Tatsuo Yamato

Phillip Pine

Ned Wilson

Michael Currie

Bill Hutton

Matt McGowan

Rummel Mor

Glenn Morrissey

Stephen Keep Mills

Stanley Grover

Peter Jason

Tony Lucatorto

Leslie Moonves

Richard Mulholland

Jed Nolan

Lynn Hancock

Charles Benton

Will MacMillan

Peter Fox