Neither seem too surprising. The Taliban were the official government of Afghanistan for a while, with the full backing of the Pakistani ISI, Saudi Arabia, UAE (organized crime capital of the world) and the tacit recognition of the USA. At the very least they would've gotten relatively decent surface to air missiles via Pakistan and old stockpiles from the Soviet occupation, both of American and Soviet make.
The CIA paramilitary thing I haven't heard about before, but given the general uselessness and unwillingness of the various warlords in Afghanistan, it's not difficult to see them doing it. Same happened in Iraq, after all....only instead of CIA paramilitaries doing the dirty work, it was the Badr Organization, an Iranian trained paramilitary of Iraqi exiles.