Here's hoping the Affidavit (the reasons a search warrant should be issued presented to a magistrate judge who then decides if it goes ahead) is made public as well.

The often are - but after a delay of years.

Also: not just top secret information but compartmented (AKA need to know) documents that can only be read in a secure reading room (readers have to leave electronics outside) that's been shielded against eavesdropping (a 'SCIF').