CNN Erin Burnett OutFront August 4, 2015 23:42:00
Debris to determine if it belongs to mh 370 and whether there are any clues about what went wrong. joe reynolds worked on high-profile aviation crash investigations like value jet and air france 447. every move of investigators will be recorded. >> we want to make sure there is no question when we got it, we treated it problem early, we didn't alter it in any way and the record is there for anybody to see. >> reporter: they will measure it and look for unique markings serial numbers, manufacturing stamps. >> what's the first thing these investigators will be looking for? >> one of the first th...