Quote Originally Posted by Irving View Post
What, specifically, should have the airlines done to prevent 9/11?
Good question, but that is a "what if" game. Examining past attacks can be useful, however current intelligence tends to me more useful in setting strategy.

IMO, the single most effective post 9/11 change has been the reinforced flight deck doors. It was a simple and relatively cost effective way of stopping a repeat of the 9/11 type of attack.

I also believe that prior to 9/11 there was no one really advocating for reinforced flight deck doors or better protection of that door when it is opened. 9/11 was a very costly way of learning that lesson.

How hard would it be to have another Lockerbie type bombing of a domestic aircraft? For that matter, how many Lockerbie style bombings of domestic aircraft would have to take place before aviation as we know it in the USA would cease to function?

9/11 required 19 men who trained for months. How many people would it take to put 5 bombs on 5 domestic aircraft leaving from 5 different airports on the same day? How many would be caught by TSA and how many would not be caught? What would be the consequences of those bombs going off in mid-flight over US cities? I wish I knew how I could prevent that from happening. Do you (this is to anyone who reads this, no one specifically)?