If this wasn't a political problem, but me and my teammates dealing with the aftermath of an incident that cost the company serious money, that's how we'd approach it. But we are technicians trying to prevent a problem, with incentives very well aligned with the company.

Government committees just don't have anywhere near this level of goal alignment, and it's not as if there is a lot of media whose best interests aligns with prevention either. You aren't getting a lot of information in the future out of a group of people you badmouthed a year ago.