That guy dosent know what hes talking about, he even says in there "someone that knows more about video editing would know how they did it", hes clueless. The smoke trails he was confused about at the end are there to measure the velocity of the shock wave, he just hasent really done his reasearch and dosent really know what hes talking about. For me these always come back to, what is the potential gain vs what is the potential loss, gains; scare people into submission, which could be done in a lot eaiser ways. loss; compleatly destroy their own credibility, making every nuclear armed nation a laughing stock. It dosent make sense, yes people fake moon landings, nukes ect in movies all the time, of couse it can be done, but why take the risk for such minimal gain that could be achieved by less risky means. Yeah america napalmed japan, russia, korea, germany, vietnam, laos ect and compleatly flattened cities without nukes, they didnt need to drop nukes on japan to level it, they wanted to. Plus you can look at the test site craters in google maps. The radiation from nuclear bombs dissapates relatively quickly because its mosly blown high into the atmosphere as gas or dust in low concentrations and blows away to settle down over a large area, its quickly not a huge threat, its sites like chernoble and fukushima that are long time dangerous as the radioactive materials are liquid and solid and in very high concentrations. That brings it back to the video, whe hes claiming its small scale explosions in slow motion, they chose still days so the fallout would rain back down on the site rather than be blown away over a city or somthing. Ive done nuclear phisics in high school, it seems ridiculous to fake an entire branch of science, medicine and power production for propaganda.