Uh you mean that they went to the base/proving grounds that had been set up for combined armor testing? Pretty sure it wasn't a "school". But I could be wrong, it happens all the time.

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The Muslim Brotherhood “must understand that their work in America is a kind of grand Jihad in eliminating and destroying the Western civilization from within and ‘sabotaging’ its miserable house by their hands..." — Mohamed Akram. http://jihadwatch.org/