In this Aug. 28, 1988 file photo, planes of an Italian aerobatics team collide over the U.S. Air Base Ramstein, Germany, before crashing into the crowd and killing 70 people. (Charles Daughty/AP …

In this Aug. 28, 1988 file photo, planes of an Italian aerobatics team collide over the U.S. Air Base Ramstein, Germany, before crashing into the crowd and killing 70 people. (Charles Daughty/AP file)