Where were the explosives in other buildings on 9/11?

The Capitol wasn't targeted, flight 93 was shot down, it wasn't going anywhere. The only targets were the ones that were actually hit. No explosives were needed at the Pentagon, it wasn't demolished,

I don't understand the point of this question. The explosives and explosive residues were identified in the 9/11 dust chemically, by Jones. It was a form of thermite. Thermite residues were found in large quantities in all the dust sampled. Melted iron microspheres were found by all analysts (this doesn't require chemistry), including official analysis people. These stupid spheres cannot be explained without a heat source sufficient to melt steel into droplets, and thermite reisdues are impossible without thermite. The explosives themselves were found--- the Jones group found uncombusted thermite in the dust too.

For building 7, it was a straight up demolition. There is nothing to establish, because there is no alternative idea for why it came down, not even the incompetent boobs at NIST could fudge that one.