Nikola Tesla's Warning of the Philadelphia Experiment & Time Travel - Universal History

Evidently, the US military, together with some of the top scientific minds in the world, men like Nikola Tesla and Albert Einstein, had been working on a new technology which would make their ships invisible, a sort of cloaking device from the pages of science fiction. All that remained was to check whether their calculations were correct, to test if, in fact, the technology would actually work. This test would become infamously known as the Philadelphia Experiment.