In article .com,
"Jay Honeck" wrote:

I know I shouldn't ask this, but what,in your opinion,if NOT improved
security measures, has prevented another 9/11-style attack?

Since we don't know if another 9/11-style attack was attempted, we
cannot determine what prevented it.

Also consider that the planning for the 9/11 attack appears to have
been patiently done over the course of years.

(I do not want to get started talking about how security measures haven't
actually been improved)

--
Bob Noel
no one likes an educated mule