Did you know there was a fourth plane that was brought down in a field in Pennsylvania?
This doesn't get as much attention because the Twin Tower attack destroyed an iconic NY landmark and the second tallest buildings in the US and resulted in almost 3,000 deaths. The Pentagon attack wasn't nearly as deadly.
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I'm not going to sit here and debate aerodynamics. If it were impossible to get an airplane traveling at speed that close to the ground, how could they ever crash? Again, wherever you guys are getting this information, it sucks. It's obviously very possible for a plane to impact the ground at high speeds, as evidenced by the fact that plane crashes are a thing. You're acting like ground effect is some magic bubble that stops you from coming close to the ground.
Also, military pilots are trained for nap of the earth flight at altitudes down to 50-250 feet so whoever this interview was with definitely wasn't a military pilot, let alone a member of the Thunderbirds.