I know GQ but a decent article how the CIA lowered its standards.
A female analyst Jennifer Mathews, with zero field experience, was promoted to base chief in an Afghan outpost and got a bunch of people killed with her incompetence. I knew someone who was there and survived. He advised that her security repeatedly warned her about security lapses , procedures but she was too dumb and arrogant to listen due to her recent promotion.
https://www.gq.com/story/dagger-to-the-cia