National Museum of Nuclear Science & History
Gebhart worked in the 200 East Area at Hanford during the Manhattan Project.
Henry “Hap” Arnold was a United States general. Arnold was born in Gladwyne, PA, in 1886. He attended the United States Military Academy, and was personally instructed by the Wright Brothers, becoming one of the first military pilots in United States history.
Bernard Sesko served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
