Exhaustive list of credible voices vouching for David Grusch and/or Claims

Ask yourself for a moment what would you have said if he had shown images of crafts. Would you have taken that as evidence in support of his claims, or would you have dismissed them immediately like you dismiss his sworn testimony?

Going a step further, what sort of evidence would you find adequate, not to convince you, but to warrant further investigation? Is that evidence classified? Because if it is, it will first need to be declassified, and that won't happen unless the public demands it, and that requires that the public first considers the possibility that the evidence may exist in the first place.

Back to your question, according to several reputable journalists, Grusch declared under oath, offered corroborating documentation, including project names, people involved in those projects and locations. The DOD has explicitly disallowed him from sharing pictures and some other information with the public.

And he is not alone. It's been reported that two dozen witnesses have declared to Congress under oath in closed sessions with regards to UFOs over the past couple of years, some of whom have come out publicly to confirm they did so.