You sure are gullible. You show us a video made by an idiot who thinks this is true.
I have flown heavy jets (300,000 pound class aircraft) since 1976 - there were zero "elaborate maneuvers performed" on 911. You post lies, and you can't do physics.
RISK? Hitting 207 foot wide targets are easy for pilots, we do it every flight, under much harder conditions.
RISK? It was a suicide mission, the terrorists were killing themselves! RISK?
Crashing requires zero experience, it is the easiest maneuver pilots do, yet avoid. I put kids in a simulator, and they hit the WTC first try, no flight training. Maybe you can't fly, but most American kids can fly a jet without training good enough to hit the WTC and Pentagon; with no training. In a 767/757. In a 707, many pilots without training in type would have a problem, but the 767/757 are new jets, they don't have the same flying problems found in earlier jets. Sorry, your claims are nonsense.
Some of the terrorists flew jet simulators in types harder to fly than the 767/757. Darn, research steps in and trashes your delusions.
How many hours do you have in heavy jets?
You blindly accept lies as your evidence - lies; why are you so gullible.