From the perspective, it appears to me to be a relatively large object. People saying it is a cruise missile may not realize the scale. If it's a missile, it is comparable in size to an ICBM. Maybe it's me that is misunderstanding the scale, but to me it is most likely a plane. The strangest part is not the missing plane, I can understand a hollow tin can disintegrating upon impact at 500 mph, what I cannot understand is the missing enormous fire. I saw an explosion, but no massive fire. It should have been a huge fire, burning for 30 minutes at least, like the Twin Towers did. As well, all that fuel would have been in the wings, so it should have smashed into the areas to the sides of the main impact and set those places totally on fire, instead it was just a big explosion then nothing. You could explain that away saying, oh, it's like a fuel-air bomb, so it just all went up in one big explosion, but fuel air bombs intentionally spread the fuel out first before igniting it, because if you don't then there isn't enough oxygen to burn all the fuel. The fire at the Pentagon should have looked very similar to the fires at the Twin Towers, it should have taken firefighters hours of fighting to put them out.