National Museum of Nuclear Science & History
J. Fletcher, Jr. served in the 390th Air Service Group.
Hirst worked at the 100-D Area at Hanford during the Manhattan Project.
Crenner worked at the 300 Area at Hanford during the Manhattan Project.
John Lansdale (1912 – 2003) was a colonel in the US Army. Lansdale first learned of the Manhattan project from National Defense Research Committee Chairman James B.