Not in the name of terrorism. Raping, beheading, and burning alive don’t require training.
I have a very dim view of the CIA; Tuskegee, Gladio, Northwoods, etc. Truman regretted forming the agency, Eisenhower warned us about them, JFK died trying to eliminate them, Nixon was taken down after making statements to the same effect, yet they still exist, strong as ever. They operate as an entity unto themselves, often beyond even the president’s control. Who’s to blame?