I don't think these extra security measures have prevented any more attacks. There could have been a copycat attempt shortly following 9/11 but we never heard about it. I think 9/11 was more of an isolated incident with an exaggerated global airport security response. What do you think?If I recall correctly, there was no warning (other than the usual "you American infidels" that terrorists are always spouting). I think it was just a 'standard commercial airplane taken over by jihadis. Security in airlines has been upgraded to make it more-difficult for anyone to get on an airplane (I haven't heard whether that has actually stopped any further attacks!)
So ... yes, yes it could.
It may seem like it but you never know. I mean we were never prepared for 9/11 in the first place. As far as I know we would never be prepared ever for any terrorist attacks. Its a struggle but we have to keep protecting our country.Do you think that 9/11 could happen again given the technological developments in air to ground missiles & especially air warfare? I think if it were to happen again the plane would be shot down. What do you think?