Technical Sergeant George Robert Caron (October 31, 1919 – June 3, 1995) was the tail gunner, the only defender of the twelve crewmen, aboard the B-29 Enola Gay during the bombing of the Japanese city of Hiroshima on 6 August 1945.

Facing the rear of the B-29, his vantage point made him the first airborne person to witness the mushroom cloud over Hiroshima.

Immediately before the mission, the 509th's photography officer, Lieutenant Jerome Ossip, asked then Staff Sergeant Caron to carry a handheld Fairchild K-20 camera.

2nd Lt. Russell Gackenback, Navigator aboard then unnamed Necessary Evil, took two still photographs of the cloud about one minute after detonation using his personal AFGA 620 camera.

[6] In May 1995, he published the book Fire of a Thousand Suns, The George R. "Bob" Caron Story, Tail Gunner of the Enola Gay about his "eye-witness account of the momentous event when the world was catapulted into the Atomic Age, the introduction of atomic capability, the technical development of the B-29, and the events that put him into the tail gun turret of the Enola Gay.