Had a 15-20 minute discussion with a co-worker who did 2-3 *months* on a grand jury a few years back. Pretty much a DA-and-panel thing, and it’s obvious that the system has a glaringly obvious point of failure if the DA desires a “no bill” result.
Co-worker was sort of surprised when I offered up the concept that that a DA might enter the proceedings not wanting a non-indictment. Just not something he had thought of occurring outside of a DA being “bought”.