National Museum of Nuclear Science & History
Philip M. Barnes served as a lieutenant in the 1st Ordnance Squadron. He was the assistant weaponeer on Bockscar during the Nagasaki bombing mission.
Carter worked at the 200 East Area at Hanford during the Manhattan Project.
Charles F. McKnight served as a captain in the 393rd Bombardment Squadron. He was regularly assigned to the B-29 Top Secret.