ill-fated turn. >> we've got to look at what we know. we know the acars went out of. we know the communication saying, all right good night. the transponder was turned off. it's vital. it gives position. it gives squawk, 2157. we know from yesterday what the transcript said and we know it was at flight level three-five-zero. this is unequivocal data but it's the last we have. we know that they were told to go to 120.9. they didn't go. what were the emergency protoco protocols. there was a distress cell. it has a radio to get in touch with the cockpit and talk to other aircraft in the corridors. what conversations went on with military radar?