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National Museum of Nuclear Science & History

Manhattan Project Spotlight: General Paul Tibbets

Colonel Paul Tibbets

“The whole sky lit up when it exploded,” General Paul Tibbets recalled. “There was nothing but a black boiling mess hanging over the city…You wouldn’t have known that the city of Hiroshima was there.”

On August 6, 1945, then-Colonel Tibbets piloted the Enola Gay, the U.S. B-29 aircraft that dropped the “Little Boy” atomic bomb over the city of Hiroshima, Japan. The Hiroshima mission made Tibbets a household name, and a major figure in the enduring debate over the decision to drop the atomic bombs.

In the late 1980s, Gen. Tibbets co-produced a documentary with the Buckeye Aviation Book Company, “General Paul Tibbets: Reflections on Hiroshima.” Joseph Papalia, official historian of the 509th Composite Group, recently shared a copy of the documentary with the Atomic Heritage Foundation, along with more than a dozen other interviews and oral histories from the 509th Composite Group Collection. You can watch “Reflections on Hiroshima” below.

Tibbets Joins the Manhattan Project

Tibbets, who came from a family of doctors, initially set his sights on the medical profession. He recalled, “I truly believed that I wanted to be a doctor and I should be a doctor, but the urge to fly airplanes overcame me.” After receiving basic flight training at Randolph Field in San Antonio, Texas in 1937, Tibbets rapidly rose through the ranks. In 1942, he was named commanding officer of the 340th Bombardment Squadron of the 97th Bombardment Group. He led the first American daylight heavy bomber mission in Occupied France in August 1942, and quickly earned a reputation as one of the best pilots in the US Army Air Force.

Tibbets returned to the United States in February 1943 to assist with the development of the B-29 Superfortress bomber, and accumulated more than a year of flying time on B-29s. On September 1, 1944, he was briefed on the Manhattan Project. Tibbets was selected to lead the 509th Composite Group, an organization of about 1,800 men tasked with dropping the atomic bomb on Japan.

Tibbets recalled feeling “tremendous responsibility…I learned this as I worked with the people at the Manhattan District, particularly Dr. Oppenheimer and the people at Los Alamos. They were perfectionists. I saw that in everything that they did. Well, I wanted to be a perfectionist.”

To prepare for the mission, Tibbets and the 509th Composite Group trained extensively at Wendover Air Force Base in Wendover, Utah. Flight crews practiced dropping large dummy “pumpkin” bombs modeled after the shape and size of the atomic bombs. Meanwhile, engineers with the Manhattan Project’s classified “Silverplate” program developed a modified version of the B-29 bomber capable of loading, carrying, and dropping the heavy “Fat Man” plutonium and “Little Boy” uranium bombs.

Whenever he needed to obtain materiel for the top-secret mission, Tibbets recalled a superior officer’s instructions: “Send in a requisition for what you want with the code word ‘Silverplate.’ Any ‘Silverplate’ requisition would be honored without question.” Using “Silverplate” as his code word, Tibbets was able to acquire essentially anything he needed.

Hiroshima Mission

In the summer of 1945, the 509th deployed to Tinian Island, the base for U.S. B-29 raids on Japan and the launching point for the atomic attacks. Tibbets remembered, “I was coldly objective in that time period because the importance of that mission was so extreme. There was no way I could fail. I dreaded that thought and didn’t dwell on it.”

The day before the mission, Tibbets named the B-29 bomber he would pilot the Enola Gay after his mother. He explained, “I knew the airplane was going to be famous. I didn’t want a duplication of names. Nobody ever heard the name Enola Gay before that.”

At 2:45 AM on August 6, 1945, Tibbets and his flight crew departed North Field on Tinian for Hiroshima. At 8:15 AM local time, the plane dropped “Little Boy” over the Japanese city. Tibbets remembered:

I made that turn and leveled that airplane out. My tail gunner, sitting in the back, says, “Here it comes,” meaning, “Here comes the shock wave,” and that’s what we wanted.

When the shock wave hit me, I said, “There is success.”

Immediately after returning to Tinian, Tibbets was awarded the Distinguished Service Cross, the second highest decoration the U.S. Army can bestow for exceptional valor, by Major General Carl Spaatz. You can watch video of the Enola Gay’s departure and return to Tinian, as well as of the final preparations of “Little Boy” and “Fat Man,” on AHF’s YouTube channel. Three days later, the US used the “Fat Man” plutonium bomb on the city of Nagasaki. On August 14, 1945, Japan surrendered, bringing World War II to a close.

General Tibbets’ role in the bombing of Hiroshima made him a polarizing figure. In the United States, Tibbets and his family became instant celebrities, and many Americans considered him a hero for his role in ending the war. On other hand, his detractors pointed to the human toll caused by the Hiroshima bomb. Between 90,000 and 166,000 people are believed to have died from the bomb in the four-month period following the explosion. Perhaps more than 200,000 people were killed directly or indirectly by the bomb’s effects, including from burns, radiation sickness, and cancer. For more information on the bombings, click here; for information on their survivors, known as hibakusha, click here.


Tibbets participated as technical adviser during the Operation Crossroads nuclear tests in 1946. He later served as commander of the Sixth Air Division, and was promoted to brigadier general. General Tibbets retired from the US Air Force in 1966. In 1976, he received criticism for re-enacting the bombing at an airshow in Texas, which created an international incident between the U.S. and Japan. Tibbets died on November 1, 2007, at the age of 92.

Tibbets always defended his actions. He explained, “A military man starts out his career with the idea of serving his country and preserving the integrity of that country. I feel I did just that very thing.”

He also argued that the dropping of the atomic bombs ultimately saved lives by preventing a bloody American invasion of Japan. “That was my idea. Save lives, not destroy them,” Tibbets declared. “I made up my mind that the morality of dropping the bomb was not my business. I was instructed to perform a military mission to drop the bomb. It brought peace to the world at that time.”

Tibbets remains a controversial figure today. His recollections provide a dramatic firsthand account of the day the atomic bomb was first used in warfare, changing the nature of human conflict forever. To listen to other interviews with members of the 509th Composite Group, visit the Voices of the Manhattan Project website.


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Tom Ferebee, Paul Tibbets, Dutch Van Kirk, and Bob Lewis. Courtesy of the Joseph Papalia Collection.

Deak Parsons and Paul Tibbets briefing the 509th on their mission

Paul Tibbets after receiving the DSC

Paul Tibbets with other members of the 509th. 

Paul Tibbets and Dutch Van Kirk after the Hiroshima mission. Courtesy of the Joseph Papalia Collection.

Paul Tibbets and the Enola Gay. Courtesy of the Joseph Papalia Collection.

Frederick Ashworth and Paul Tibbets prior to takeoff. Courtesy of the Joseph Papalia Collection.

General Spaatz Presents Distinguished Service Cross to Col. Paul Tibbets as General Davies Looks On

Paul Tibbets 

Col. Paul Tibbets stands in front of the Enola Gay

Colonel Clifford Heflin and Colonel Paul Tibbets

Tinian Joint Chiefs (Purnell, Farrell, Tibbets, Parsons)

Paul Tibbets.

The Enola Gay today on display at the National Air and Space Museum Udvar-Hazy Center.

Enola Gay