On vacation, staying at my mom's house. My mom woke me up saying my sister had called and to turn on the TV - a plane had hit the World Trade Center.
My half awake mind was thinking this had better be good, and it was probably a Cessna or something like that. Turned on the TV just in time to see the second airplane hit
.
I remember telling my wife "We are at war, we just don't know who with yet".