From a drone and on the ground, NTSB investigators are mapping the scorched debris field from Tuesday's crash and revealing the blackbox recordings captured a bell going off in a cockpit 37 seconds after the plane began its takeoff roll, lasting until the recording stopped 25 seconds later. >> During this time, the crew engaged in efforts to attempt to control the aircraft before the crash. Among the missing, Megan Washburn, a mother of two, and John Lax, both worked at the scrap metal business that was hit ...