Witness 007,
You obviously didnt google some of the helpfull suggestions I posted.
You yourself said the pentagen pane was allmost flying at ground level, and how fast was it going?, 500 miles an hour or some such?
Try again, Google ground effect, its a physical impossibility the official story, its against all laws of physics, it cannot happen!
Google Pilots for truth, they are professional pilots who know these big planes and what they are not capable of, you might learn a thing or two.
Or in case you are not that interestedenough I will spell it out.
A cushion of air develops under a wing, when a wing gets too close to the ground, it cannot displace as fast as it is created depending on the speed of the wing through the air, that cushion of air therefore becomes a barrier that holds an aircraft off the ground, the faster it is, the higher the craft is heald up.
Its why you see birds flying so fast and effortlessly a short distance above calm water, Ground Effect!
Another rthing you probably dont know, those particular aircraft can reach the speeds we where told they where flying at, but only at high alltitude where the air is so thin, according to the manufacturers of those planes, they would break apart if they could even manage to fly as fast as we where told they did long before they hit any building.