Yes, the planes were travelling at speeds which vastly exceeded what standard 767s can reach at low altitude, vastly exceeding.
They generally don't. Because they can't.
This is HUGE! If you can demonstrate that is correct, then you can expose the entire report as a lie, and prove the planes were not planes! Let's concentrate on that for a while as it's such as showstopper. What are the sources that say a 767 can't go at 590mph at 1000 feet AGL?