dangerous gases into the air. evacuation orders are still in effect for a 12-glock zone. the national transportation safety board a signal problem reported before the derailment could have contributed to that accident. bill: a breaking news out of a school in atlanta. we'll get you details. this is something that is crossing right now and pictures to follow coming up out of atlanta. and also this. new questions in the shocking murder-suicide of kansas city linebacker, jevon belcher. >> this is real tragedy. horrible tragedy. jovan was, just one of those young men, we had such great memories of here. bill: wow! there are questions about motive that have yet to be answered frankly. and whether or not head injuries played a part in this. famous sportscaster jim gray is here to talk about that story. martha: a tough story this