I remember I rented a plane a few days after 9/11 (airspace in Canada opened a couple of days before the US) and posted at the FBO was the starkest memo I’d ever seen. It was from the US government stating that any aircraft crossing the border would be fired upon without warning.
Yeah, well, I can see where that might shake some people up. I am sure we all remember where we were when 9/11 happened. I was in the prison, and a criminal, who had been watching TV, came and told me about the first aircraft. I thought maybe it was an accident. Then he came and told me about the second one, and I knew it was no accident.