off the black box which we know has 30 days of battery power. sometimes it knows two months like the flight that crashed leavi leaving brazil on the way to paris. >> if they can recover some of the pieces, you will get clues off that. think about flight 800 in 1996 that was recovered off the coast of long island here, you can see burn marks or charred marks if there was a fire or explosion. >> and they will be able to tell if the plane broke on impact as it was going down, or as you are suggesting someone may have happened mid-air >> the black box is key. it will give you what was said in the final two hours, the altitude and lotion. this is breaking news and we are