A Soo Line grain extra storms westbound through Brookfield, Wisconsin, on the afternoon of April 19, 1987. When built in July 1973, Milwaukee Road EMD SD40-2 No. 16, was originally numbered 177, but was renumbered when equipped as a Locotrol Master, for an early radio-control system where remote locomotives positioned back in a freight train consist could be controlled by a “master” unit.
