>> wreckage from the flight is being recovered. the investigation far from over. in fact it has just begun. back with me now, mary mike carlene, david. once all the wreckage is found and recovered, david, what's next. how do we get answers here? >> once it comes back inside. the accident investigator in charge is the person who controls everything as far as what goes in. what goes out. the briefings. everything is controlled through that investigator in charge. and so that's where the information goes to. that's where the parts are going to. they're all controlled. there is a chain of custody that has to be maintained. so there is no difference in that. so that when mary and wants to defend her clients. she needs to have chain of custody to know that part from here to here to here. so that's a lot of part, a lot of the investigation is just documentation. >> yeah not sure. wanted to ask you. don't remember if i got to it.