Just a wild guess, but I am assuming Khalid Shaikh Mohammed is not exactly bubbling with excitement at telling his life story, naming names and playing 20 questions.
How are we getting info from him, (other than going over notes and documents and computers found in the room with him when he was captured)?
Do they/are they allowed to still use things like “truth serum”?
Do they use hypnosis?
What methods can/do they use to get information?