if they were going to they would have by now. >> all right. andrew stevens, thanks for the update. before it fell 30,000 some fleet flight 8501 was climbing. that's what a source tells reuters saying the jet made an unbelievably steep climb. the source came to this conclusion after seeing radar data from the plane. here's more of what the source told reuters. quote, so far the number taken by the radar are unbelievably high. this rate of climb very high too high. it appears to be beyond the performance envelope of the aircraft. cnn has not been able to independently verify this report but let's discuss this with our experts. with me now is the author of this book "extreme fear the science of your mind and danger" and les abend. gentlemen thanks so much. stressing, again, that this is somewhat speculation, we don't