up. here's some more as you had said colors which is the tail, right? >> right. >> more of this, this debris field is just huge. >> it's massive. >> how do you as a crash investigator begin to map this to then begin removing it? >> do you remember when we were doing the mh-370 and did drift mode models, it's not unlike that mapping where each of those pieces are. you can impact them backwards and figure out from the impact point where these pieces came from and that gives you a clue as to at what angle the aircraft may have impacted and how it went into the ground. it also tells you a lot about speed. right here you can see landing gear. >> you see it right there. >> a piece of landing gear right there. that's telling us that it didn't burn. so that tells us that was it such an impact that it extinguished itself as it impacted or because if that burnt, that is made of magnesium, it would be smoking.