I knew from September 18, 2001, that the official story about 9/11 was false. That was when I realized that the perpetrators had made a colossal blunder in collapsing the South Tower first, rather than the North Tower, which had been hit more directly and earlier.
Other anomalies poured in rapidly: the hijackers' names appearing in none of the published flight passenger lists, BBC reports of stolen identities of the alleged hijackers or the alleged hijackers being found alive, the obvious demolitions of WTC 1 and 2 [each 1300+ feet tall, 110 stories], and WTC 7 [570 feet tall, 47 stories, and not hit by an airplane], the lack of identifiable Boeing 757 wreckage at the Pentagon, the impossibility of ordinary cell phone (as opposed to Airfone) calls being made consistently from passenger aircraft at cruising altitude, etc., etc., etc.
AI have taken off my uniform as a US Army intelligence officer, but I have not taken back my oath of loyalty to the United States of America and its Constitution. If it comes to a fight to the finish for my nation: count me in!