Watched much of live on television...saw the 2nd WTC plane live...seemed surreal, was talking to my brother on the phone...funny, I was very calm...basically said "we're at war" with somebody.
Hour or two later, they scrambled fighter jets along the east coast, and living 35 miles north of Baltimore, rather rural, the sound barrier breaking was eerie to hear...couldn't grasp what it was at first...sound kept ricocheting off ridges, trees, etc. Briefly thought Philly had been nuked.