The Final Four.
New York City Transit Authority (NYCTA) R110A cars 8001, 8005, 8010, and 8006 are seen sitting at the South Brooklyn Railway Yard near 3rd Ave and 38th St in Sunset Park, Brooklyn. These four cars are the last four unmodified R110As remaining, but that won't be so for long. Cars 8002-8004 and 8007-8009 have already been converted into hose reach cars for pump trains, and these four will be leaving the property soon for a similar rebuild. Two of the cars will become pump cars and the other two will become generator cars to power equipment on generator and hose reach cars. This rebuild may finally reunite the two 5-car R110A sets, as all ten cars combined would make two pump trains!
