Maybe the plane was shot down. I doubt we will never know. I can see why they had to do it, if it WAS shot down.
Had it gone on to the capital, it would have killed who knows how many people on the ground, as well as the innocent people on the plane. At that point, we KNEW it was going to crash either way. Either at the capital, or in an open field. It was not going to "land" anywhere.
So if people could be saved by doing it, i can see why it's possible it was taken down.
It's a sad piece of our history now.
But i do NOT believe our government had anything to do with the twin towers coming down. To me, it's easy to see how a plane slamming into them and the fire afterwards would bring them down. The weight of the upper floors above the damage, and the collapse of the floors where the planes hit would then bring it all straight down, just as we all saw.
I can't understand how some think that's not possible. That much weight coming down on the rest of the structure would do it.