they're going to be looking very close at flight training and operations manuals, at the crew's experience. the system and the flight management computer. the cockpit configuration and there's been a lot of discussion about state and there's been a lot of discussion of stabilize approaches and we're going to be looking at that very closely. we do hope to interview the crew within the next few days. we have a power plants team and looking at the engines, they're documenting general conditions, taking a lot of photographs. they can tell through their examinations whether an engine is -- the engine was rotating at the time of the crash. they'll be looking to document that and the conditions -- any evidence that there was any fire that might have originated in the engines and there are