Unanswered Questions about "World Trade Center"

1. Why was no footage of the planes hitting the tower ever showed on TV in slow motion?
2. Why when it was slowed down did on both planes it apear there was an object attached to the bottom of these planes, and a flash seen just BEFORE inpact on the tower just BELOW the impact point?
3. Why was there numerous reports that the planes were NOT commercial airliners? Keep in mind, they were flying low, many people discriped them being military planes, and wouldnt anyone notice if there was something attached to the bottom of a plane at a public airport?
4. Why were there so many reports of MULTIPLE explosions AFTER the intitial impact and explosive experts stating they could smell the explosive chemicals?
5. Why was there traces of theremite in the dust? Why was NONE of the steel preserved for analysis?