The CIA has technology 10 years in advanced, even before 911....they had everything they needed to stop any attack, even a huge one like on 9/11, they did nothing, the articles prove it on the timeline....
I think you should consider taking a upper-level course in terrorism/counter-terrorism or something similar at Baylor, if they offer such a course. It might give you some insight into how difficult it really is to figure out what is going to happen, before it happens.
Although it is tempting to say, post hoc, that everyone should have predicted and prevent 9/11 (and, correspondingly, their failure to do so indicates something odd), it doesn't match up with reality. In real life, the act of preventing terrorism is extremely difficult and time-consuming. Terrorists tend to operate on the fringes in small groups, lacking the kind of infrastructure that can be readily observed by intelligence agencies in order to get a clear picture of what's going on.
As a result, there is a very high noise-to-signal ratio in the world of counter-terrorist intel. That includes 9/11. There were a few leads that ended up being significant, but a study of the environment at the time from an intelligence perspective shows that there was a lot of cruft flying around at the same time, and there always is. It's difficult to pick out the significant stuff unless you get lucky and have good intel.
I haven't studied the Al-Qaeda group as much as some others, but I did do a lot of research into the IRA a couple years back. They were incredibly hard to pin down by British intelligence and law enforcement, even when some of the major players were known (as with Al-Qaeda). These guys are very adept at splitting their operations into little cells, running, and hiding.
Your statements about the technology and the "they could have stopped it" confidence indicate a kind of naive confidence in what our intelligence community can actually do. Yes, the US has very accomplished, highly skilled intelligence professionals. But no, they aren't magic. They can't predict something without reliable information, and terrorists often operate under the radar.
9/11 may have been big, but it really wasn't that complex. It exploited several major weaknesses in the US system, which is something many terrorists are painfully good at. After the fact, it's easy to say "yeah, we probably should've detained this guy" and all, but at the time it wasn't so obvious.
As far as your statement about the technology goes, that's a fantasy that exists only in the world of the movies. Even if it were true, it still doesn't solve the problems inherently present in intelligence gathering and analysis.
Unless you're going to claim the CIA has mind reading technology or working remote viewing.