Bush appeared on the cover of '' Time '' magazine on April 3 , 1944 . He toured the Western Front in October 1944 , and spoke to ordnance officers , but no senior commander would meet with him . He was able to meet with Samuel Goudsmit and other members of the Alsos Mission , who assured him that there was no danger from the German project ; he conveyed this assessment to Lieutenant General Bedell Smith . In May 1945 , Bush became part of the Interim Committee formed to advise the new president , Harry S. Truman , on nuclear weapons . It advised that the atomic bomb should be used against an industrial target in Japan as soon as possible and without warning . Bush was present at the Alamogordo Bombing and Gunnery Range on July 16 , 1945 , for the Trinity nuclear test , the first detonation of an atomic bomb . Afterwards , he took his hat off to Oppenheimer in tribute
Trinity nuclear test
Trinity (nuclear test)
Vannevar Bush