No one knows. All planes were eventually grounded on 9/11, so who knows if there could have been more that they were planning to hijack but didn't get to.
911 is when the twin towers got hit by 2 planes
no but he was behind 911
Because bad people were driving the planes and made the planes crash on purpose.
19 terrorist
no
4
D.C., Newark, and Boston are the three cities the hijacked planes left from.
2
yes they each had 2 guns
I believe 747 Boeing passenger jets
American Airlines and United Airlines.
3 i guess ... what i win?