It takes time to clean out the dead slimey wood at the CIA or anywhere in the Government. With Civil Service and Unions you have to show cause, or try to get them to take a lateral transfer. What you can do, is Monitor everything they do and they will commit some kind of violations of their job specs and you keep documenting them and warning them, and after so many violations and warnings they get tossed,and then the fun begins with the Union Mouthpieces. If you have done your homework and they have been sloppy and not very good employees they will be dismissed for the violations. I was a insructor and had to carefully document every little mistake even if we never would use it against someone, it had to be precise and on file. it saved my Department lots of lawsuits, and got me cursed out a number of times, and threatened a few also.
I have a sinking feeling that this whole thing is about Oil for Food money. The slimest of all reasons. How would the Union reps defend that?
Maybe this is a useful technique for getting rid of incompetents, but mostly I have seen it used by backstabbers who are insecure because this is their only real job skill. Curiously these people are often female.
At one company where I worked their was a woman who had risen from a receptionist position to vice president using this technique. Scores of excellent employees lost their jobs because their competence was a threat to her. It eventually became obvious why most firings in the company came from her department and she was canned.