Behind the house I lived in as a child was the woods we named "The crash field". Beyond that field was an airport. I have always looked up at airplanes.

There is a difference between a contrail(I have seen them all of my life) and a chemtrail (I have seen them since the 90's).

Has the US every dispersed chemical agents on its own population? Yes. They have admitted it. Do they still do it? Yes.