FILE - Flowers and pictures are shown at the memorial in Romulus, Mich., to mark the 25th anniversary of the crash of Northwest Airlines Flight 255 near Detroit Metropolitan Airport, Aug. 16, 2012.

FILE – Flowers and pictures are shown at the memorial in Romulus, Mich., to mark the 25th anniversary of the crash of Northwest Airlines Flight 255 near Detroit Metropolitan Airport, Aug. 16 ...