Hiroshima was not nuked

Air Burst"The bomb that went off above Hiroshima, 67 years ago this week, was set off at 600 meters above the ground. The Nagasaki bomb was detonated at 500 meters. Both of those heights were chosen to maximize damage — especially for the “flimsy” wooden houses of Japanese civilians." [8]People are told that the bomb detonated in the air because it would be impossible for a bomber to drop the amount of TNT required to cause such an explosion, this makes nuclear bombs more believable. However there is no proof the untested little boy bomb and fatman bomb did detonate at those heights, as the bombs were not filmed falling from the sky. Only the explosion of both atomic bombs were filmed despite two other bombers being present which met no resistance. The scant evidence of a historical moment shows the whole operation was staged. 0:44 of the below video shows where contact fuses were inserted to cause the fatman bomb to detonate once the bomb hits the ground if it fails to detonate in the air. "arming and fuzing mechanisms must be designed and engineered so that once a weapon is released and armed it will fire. An intact weapon in unfriendly hands can be turned against attackers or disabled or disassembled and copied. For these reasons, arming and fuzing systems must be absolutely foolproof... the primitive LITTLE BOY and FAT MAN bombs of 1945 had three separate and interleaved parts to their fuzing systems" [9]Why do people say the bomb was detonated above the city when there is no proof of this?A witness does say she saw the Enola Gay and the bomb it dropped, see 7:25 of video belowHowever it is not believable because the witness was a 13 year old standing outside less than a mile from where the bomb exploded so should have died. In Hiroshima almost everything up to about one mile from X was completely destroyed and the fires were pretty bad. Also she can see amazing detail even though the plane was 9.4km high and she was 1km away. The Earth's surface curves out of sight at a distance of 3.1 miles, or 5 kilometers just to give an idea of the distance involved.Many of the major cities of Japan were firebombed including Tokyo, but it seems the "atom" bombed cities were chosen because more buildings were constructed of wood which would burn and show a more complete destruction, this would impress Russia."New studies of the US, Japanese and Soviet diplomatic archives suggest that Truman’s main motive was to limit Soviet expansion in Asia, Kuznick claims. Japan surrendered because the Soviet Union began an invasion a few days after the Hiroshima bombing, not because of the atomic bombs themselves, he says. According to an account by Walter Brown, assistant to then-US secretary of state James Byrnes, Truman agreed at a meeting three days before the bomb was dropped on Hiroshima that Japan was “looking for peace”. Truman was told by his army generals, Douglas Macarthur and Dwight Eisenhower, and his naval chief of staff, William Leahy, that there was no military need to use the bomb. “Impressing Russia was more important than ending the war in Japan,” says Selden." [10]This is what Harry Truman has to say:It is clear the message he wants to get across is how powerful America is to intimidate Russia. If that was his objective it was unnecessary to actually create an atom bomb. Also it would be far cheaper and easier to fake.What would be the point of making a real atomic weapon? After killing a quarter of a million civilians, pretty much all the weapon was good for, it was obvious it would become illegal, and making them bigger would be a huge waste of money. sources:[8] http://blog.nuclearsecrecy.com...[9] https://cryptome.org...[10] https://www.newscientist.com...