There have been two accidents in the past week, the Antares launch of Orbital Science's CRS-3 mission, and the test flight of SpaceShip Two that went awry, resulting in the death of one of the two pilots. Rockets being what they are, both events were extreme, involving the complete destruction of the ships involved. Space being what it is, both got a lot of attention from the press - people have a lot of feelings about space exploration.
Are procedures directed at proper documentation and data collection in the event of an accident begun when they occur? What methodologies are typically used? Because of the way such events tend to unfold, is it generally the case that few conclusions can be drawn until considerable analysis has been done?