Question: What was the codename for the atomic bomb that is dropped by someone other than the weaponeer Frederick Ashworth?

Passages:
Rear Admiral William Sterling "Deak" Parsons (26 November 1901 – 5 December 1953) was an American naval officer who worked as an ordnance expert on the Manhattan Project during World War II.  He is best known for being the weaponeer on the "Enola Gay", the aircraft which dropped the Little Boy atomic bomb on Hiroshima, Japan in 1945.  To avoid the possibility of a nuclear explosion if the aircraft crashed and burned on takeoff, he decided to arm the bomb in flight.  While the aircraft was "en route" to Hiroshima, Parsons climbed into the cramped and dark bomb bay, and inserted the powder charge and detonator.  He was awarded the Silver Star for his part in the mission. "Little Boy" was the codename for the atomic bomb dropped on the Japanese city of Hiroshima on 6 August 1945 during World War II by the Boeing B-29 Superfortress "Enola Gay", piloted by Colonel Paul W. Tibbets, Jr., commander of the 509th Composite Group of the United States Army Air Forces.  It was the first atomic bomb to be used in warfare.  The Hiroshima bombing was the second artificial nuclear explosion in history, after the Trinity test, and the first uranium-based detonation.  It exploded with an energy of approximately 15 ktonTNT .  The bomb caused significant destruction to the city of Hiroshima and its occupants. The Children's Peace Monument (原爆の子の像 , Genbaku no Ko no Zō , lit.  "Atomic Bomb Children Statue") is a monument for peace to commemorate Sadako Sasaki and the thousands of child victims of the atomic bombing of Hiroshima.  This monument is located in Hiroshima, Japan.  Sadako Sasaki, a young girl, died of leukemia from radiation of the atomic bomb dropped on Hiroshima on 6 August 1945. Hiroshima is a book by Pulitzer Prize-winning author John Hersey.  It tells the stories of six survivors of the atomic bomb dropped on Hiroshima, covering a period of time immediately prior to and one year after the atomic bomb was dropped on August 6, 1945.  It was originally published in "The New Yorker".  Although the story was originally scheduled to be published over four issues, the entire edition of August 31, 1946, was dedicated to the article.  The article and subsequent book are regarded as one of the earliest examples of the New Journalism, in which the story-telling techniques of fiction are adapted to non-fiction reporting. Vice Admiral Frederick Lincoln "Dick" Ashworth (24 January 1912 – 3 December 2005) was a United States Navy officer who served as the weaponeer on the B-29 "Bockscar" that dropped a Fat Man atomic bomb on Nagasaki, Japan on 9 August 1945 during World War II. Jacob Beser (May 15, 1921 – June 16, 1992) was a lieutenant in the United States Army Air Forces who served during World War II.  Beser was the radar specialist aboard the "Enola Gay" on August 6, 1945, when it dropped the Little Boy atomic bomb on Hiroshima.  Three days later, Beser was a crewmember aboard "Bockscar" when the Fat Man bomb was dropped on Nagasaki.  He was the only person to have served as a strike crew member of both of the 1945 atomic bomb missions. Two Bombs, One Satellite (Chinese:两弹一星) was an early nuclear and space project of the People's Republic of China.  "Two Bombs" refers to the Atomic bomb (and later the Hydrogen bomb) and Intercontinental Missile, while "One Satellite" refers to artificial satellites.  China tested its first atomic bomb and hydrogen bomb in 1964 and 1967 respectively, while in 1970 the country successfully launched its first satellite (DFH-1).  23 scientists involved in the project was awarded the title "Two bombs and one Satellite Award" (Chinese:两弹一星功勋奖章) in 1999. Morris Richard Jeppson (June 23, 1922 – March 30, 2010) was a Second Lieutenant in the United States Army Air Forces during World War II.  He served as assistant weaponeer on the "Enola Gay", which dropped the first atomic bomb on the city of Hiroshima, Japan on August 6, 1945. Nuclear weapons possess enormous destructive power from nuclear fission or combined fission and fusion reactions.  Starting with scientific breakthroughs made during the 1930s, the United States, the United Kingdom and Canada collaborated during World War II in what was called the Manhattan Project to counter the suspected Nazi German atomic bomb project.  In August 1945, two fission bombs were dropped on Japan, standing to date as the only use of nuclear weapons in combat.  The Soviet Union started development shortly thereafter with their own atomic bomb project, and not long after that both countries developed even more powerful fusion weapons known as "hydrogen bombs". "Fat Man" was the codename for the atomic bomb that was detonated over the Japanese city of Nagasaki by the United States on 9 August 1945.  It was the second of the only two nuclear weapons ever used in warfare, the first being Little Boy, and its detonation marked the third-ever man-made nuclear explosion in history.  It was built by scientists and engineers at Los Alamos Laboratory using plutonium from the Hanford Site and dropped from the Boeing B-29 Superfortress "Bockscar".  For the Fat Man mission, "Bockscar" was piloted by Major Charles W. Sweeney.

Supporting sentences:
"Fat Man" was the codename for the atomic bomb that was detonated over the Japanese city of Nagasaki by the United States on 9 August 1945.  It was the second of the only two nuclear weapons ever used in warfare, the first being Little Boy, and its detonation marked the third-ever man-made nuclear explosion in history.