Let's not forget that it also later came out in separate court proceedings, that the Rev. Robert Millar, leader of the Elohim City camp where McVeigh hung out at times with other John Doe's, was a paid FBI informant -- had been for years.
Think of that -- a racist, white supremist camp subsidized, if not wholly owned and operated, by the United States of America!
And the rabid war mongers lurk among us, refusing to consider government knowledge or involvement in WTC. Given the sophisticated spy technology put out by the USA, its easier to believe they allowed it to happen than it is to believe they totally missed it.