Four men from the 82nd Airborne Division looking at the base of the mushroom cloud of 'Big Shot', an atomic bomb test, from the observers' foxhole area, Camp Mercury,Yucca Flats, Nevada, April 22, 1952. (Photo by PhotoQuest/Getty Images)
Four men from the 82nd Airborne Division looking at the base of the mushroom cloud of 'Big Shot', an atomic bomb test, from the observers' foxhole area, Camp Mercury,Yucca Flats, Nevada, April 22, 1952. (Photo by PhotoQuest/Getty Images)