How did they keep the atomic bomb secret?

Answer 1

The Japanese did not actually Dodge our radar sensors when they bombed Pearl Harbor. At the time of the attack there were only mobile radar stations in place, no fixed radar stations were able to be built because of dissent in the government planning of the structure. Because there were only mobile radar stations they could only be operated during certain time frames due to the fact they were needed for maintance and training. On Sunday morning they were supposed to shut down at 7:00 however because the operators ride had not come he kept it running. At 7:02 he spotted the formation of the Japanese. After plotting their course and other necessary information he called his superiour who disregarded the information. He had disregarded the information because he took it for the flight of B-17's(i think?) that were supposed to arrive a couple minutes later and 5 degrees from the formation's location. He had also heard hawain music played in the morning which was oftened used to allow there planes to home onto the islands. Because of these unfortunate events the Japanese were able to penetrate our radar sensors.

Answer 2

Just like the military keeps anything else secret - by keeping very close tabs on who knows what. It is called operational security. Only those who need to know something are permitted access to its information.

Answer 3

Loose lips sink ships.