On 9-11 my middle child, a son, was sitting in his HS library. He told me everyone began running to the TV. When he looked he saw a cop running away from something.
The boy told me later he just instinctively knew that whatever he was seeing (it was the first tower coming down) was very, very bad as he never knew a cop to run from anything. Remember, at that time his dad (me), mom, older brother, uncle and great uncle were all cops. The boy called it right.
He will never forget that day.
G