"on 9/11 I was supposed to be in a meeting 5 blocks away,..my manager nixed the travel plans."
Wow, and it seems you still s**t yourself at the thought.
I'd never realized how easily scared some people are. I think we'd find the universe could get along quite happily without you (or me, or pretty much anyone else) in it.
As it happens I knew someone who was in the 2nd tower. He saw the first plane go in. He had a choice. Treat as BAU and go to work or run like f**k.
He didn't expect a 2nd plane but he didn't like the idea that tower could drop on his tower. He was there. He lived, as did many thousands of others. He went home to his wife. End of story.
S**t happens. Or as Mary Shaeffer observed at the time "Expecting perfect safety is for people who don't have the balls to live in the real world." Never heard the expression "Fear is not real" have you?
IIRC the numbers for MI5 terrorist "suspects" it's 2000 suspects in a country of 60 million IE 0.003%. But you're so scared of these ar**holes you'd rather live with no privacy because you're soooo scared of people who might (not will, might) cause an incident. As for 7/75 (IE 12 years ago) all the bombers "auto Darwinated" themselves, so I suppose just having a random stranger being shot in the head by the Police is just a bit unlucky for you?
What happens if that random stranger is you? Will your relatives be so supportive of the police?
I don't think so.