National Museum of Nuclear Science & History
Warren Johnson worked for Clinton Laboratories at the X-10 Reactor.
Thomas F. Costa served as a 1st lieutenant in the 393rd Bombardment Squadron. He was the bombardier regularly assigned to the B-29 Some Punkins.
Alexander Klementiev was born in Moscow in 1942 and grew up in the Soviet Union during the Cold War. As a student, he attended the Moscow Institute of Physics and Technology, where he studied radio physics and earned his Ph.