According to Jacobsen, “The black device attached to this balloon in Area 9 of the Nevada Test Site is a 74-kiloton atomic bomb code-named Hood, the largest atmospheric nuclear weapon ever exploded in the United States. Standing on a ladder minutes before this photograph was taken on July 5, 1957, Al O’Donnell put the final touches on the bomb’s firing system. Area 51 is over the hill to the right of the device.”
