While here and there some are getting sanctimonious about this "reenactment", unfortunately it serves a specific scientific purpose. The investigating board's job is to create a hypothesis concerning what happened, and then as accurately as possible test that hypothesis. That can mean recreating the conditions if possible.
Of course, there's no ruling out that some officials may want to milk this event for as much political gain as possible, and do their business with a certain pomposity and flair.