Grand jury. ... A grand jury is a jury – a group of citizens – empowered by law to conduct legal proceedings and investigate potential criminal conduct, and determine whether criminal charges should be brought. A grand jury may subpoena physical evidence or a person to testify. Grand jury - Wikipedia
https://en.wikipedia.org/wiki/Grand_jury
------------------------------------------------------------------ If there are NAMES in the MULLER REPORT who are implicated in GJ proceedings, those names
are shoielded from disclosure.
Them are the Rules. Hope this horizon is in view now.