Well, I finally watched the Kevin Shipp presentation, most of what he said is in the realm of half-truth, certainly the Pinochet stuff was real, the CIA has done plenty of dirty stuff, and it's grist to the conspiracy mill.
He was long on generalities and short on specifics, but I see nothing more than what was already common knowledge about the CIA.
Everyone knows Bush covered up the intelligence failures surrounding 9/11, failure to connect the dots, incompetance.
As far as his notions on geo-engineering, yes, geo engineering is a real research topic, and rightly so, but that has nothing to do with chemtrails. That's just conspiracy paranoia.