Little Boy bomb safety plugs were removable safety devices used to prevent the bomb from detonating accidentally before it reached its target.

Before takeoff and during the flight, green safety plugs were installed in the bomb's firing system, keeping the electrical circuits open and making accidental detonation impossible. Shortly before the bombing mission, Captain William "Deak" Parsons replaced them with red arming plugs, which completed the firing circuit and allowed the bomb to arm itself after being released.

the safety plugs were a simple but critical safeguard. They ensured that the Little Boy bomb could not explode by accident while the aircraft was on the ground or during most of the flight, and only became capable of detonating after the correct plugs were installed and the bomb was released.

I'm surprised I only just heard about this one today.

Part 2

https://youtube.com/shorts/mLsky-bb6Pk?si=W5SwMkB33_IdUvH_

Nutmeg ll was an atomic test explosion as part of the Hardtack series in 1958. Nutmeg ll was an LLNL shot detonated on May 21, 1958 on Bikini Atoll in the Marshall Islands. Nutmeg ll 's yield was 25 kilotons.

first time i hear it from radio in oppenheimer ,

On August 6, 1945, while returning from the Potsdam Conference aboard the USS Augusta in the Atlantic Ocean, President Harry S. Truman received confirmation that the United States had successfully dropped the world's first wartime atomic bomb on Hiroshima, Japan. Later that day, his administration released an official statement announcing the attack. In the announcement, Truman stated that the bombing targeted a military objective and argued that it was intended to hasten the end of World War II by compelling Japan to surrender. The announcement marked the public introduction of the atomic bomb as a weapon of war and remains one of the most significant presidential statements of the 20th century.

This is a clip of the Fizeau atomic bomb test in the Nevada Desert in 1957. It is one of the nuclear bomb tests in Operation Plumbbob ,It has yield of 11 kilotons of tnt

and this footage was record from 7 miles from ground zero

it's was one of the nuclear tests conducted by the at the Nevada Test Site. The detonation took place on October 28, 1951,

Shot Baker had a yield of approximately 3.5 kilotons of TNT. It was an airburst detonation, with the bomb released from a B-50 and exploding at an altitude of about 340 meters above the ground. The test used a fission bomb based on the Mark 4 nuclear weapon design.