The muscle hijackers–the ones who weren’t training to be pilots, “twelve of whom (out of a total of thirteen) were Saudi nationals–began arriving in the United States in late April 2001, and were in place with the arrival of [pilot Khalid al] Mihdhar on July 4. They had secured their U.S. tourist visas before leaving home for training in Afghanistan at the training camps that were known to but not attacked by American national security, even after the attack on the [USS] Cole had been linked to al Qaeda.” [The 25th of the month used for date sorting purposes only.]
– John Farmer, The Ground Truth, Page 52