Price called the Manhattan Project, the United States' development of the atomic bomb, the best-kept secret of the war. It and radar were the two military topics that, if a code violation occurred, his office did not allow this to be used as a precedent for permitting other media outlets to report the same information. The government made a general announcement on radar in April 1943, and government and military officials frequently leaked information on the subject, but restrictions did not end until the day after Japan's surrender in August 1945.