Seraph101, you don't hold any factual evidence that supports United Airlines Flight 93 was shot down, so save it.Furthermore, nineteen Islamic extremists with box cutters, not to mention supposed explosives, hijacking four commercial airliners and successfully flying three of them into their intended targets is not an extraordinary claim. Actually, it's something that's very much grounded in reality... with heaps of cold, hard evidence to back it, as well.