Variety Night At The BET. The shop pits were full on the night of July 21, 2021 at the Massachusetts Bay Transportation Authority - MBTA Boston Engine Terminal in Boston, Massachusetts. Peering over the roof of a GP40MC, (left to right) MBTX 1116 (GP40MC, née-CN 9499, GP40-2LW, 9/1974) sit next to MBTX 2006 (HSP46, MPI), MBTX 1059 (F40PH-2C, 9/1987) and MBTX 2000 (HSP46, MPI) are all in to be checked out or worked on my the facility's crews. The MBTA presently rosters 3 active types of locomotives for revenue service on the "Purple Line", all represented in this photo.