Russell Gackenbach signed 14'' x 11'' photo of the Hiroshima bomb explosion, taken by Gackenbach aboard ''Necessary Evil'', the photographic plane that tailed the Enola Gay during the mission. Photo is inscribed in blue felt-tip by Gackenbach, ''Russell E. Gackenbach / Navigator - Necessary Evil / Hiroshima - 6 August 1945''. Satin-finish photo is in near fine condition. With PSA/DNA COA.