I believe the answer is "no one." If I am correct, it is an abandonment of the thing that makes America the greatest country in the world: It's endless appeals system.
Not quite no one. Certainly applicants themselves are privy to the details of cases they themselves bring. I guess applicants are always agencies of the executive branch.
Is that where it stops? I wonder, do FBI agents discuss details of it's FISC cases with, for instance, NSA agents? And can the FBI, for instance, obtain details of a FISC case brought by, for instance, the NSA?