Regarding the preparations of the 9/11 hijackers: “[B]eginning in May [2001], the leaders and logistics men began taking trial flights on cross-country routes, though they never took the exact flights that they would later hijack.” [The 15th of the month used for date sorting purposes only.]
– Kate Zerinke and Don Van Natta Jr., “Hijackers’ Meticulous Strategy Of Brains, Muscle and Practice,” The New York Times, Nov. 4, 2001