Two members of the National Transportation Safety Board, Jim Cash, left, and Bill Bush, display at a Washington news conference Tuesday, September 2, 1986. Shown are what remained of the so called "black box" flight recorders which were on the Aeromexico DC-9 that crashed Sunday in Los Angeles. The equipment was severely damaged and it was not known how such information will come from the devices. Part at left and one held by Bush is an undamaged example. (AP Photo/Charles Tasnadi)