In October 1939, Albert Einstein warns President Franklin D Roosevelt that Nazi Germany is actively pursuing an atomic bomb and urges him to make sure that the United States developes the bomb first. Roosevelt heeds the warning and launches the "Manhattan Project" in June 1942 In October 1942, Roosevelt tells Einstein that prudence calls for the U.S to have a back-up plan to the Manhattan Project in case Hitler gets the bomb first. Roosevelt commissions Einstein to secretly