Here are two videos of NYSW 3634, 3020, 3672, and 3664 on SU-99 stalled at Butler, NJ 6/3/2006. I had to break the video into two parts because You Tube has a ten minute limit of video clips.
Part one: The SU-99 stalls at Butler. There is great audio of the 3634's "howling" turbo charger in this clip.
Part two: A mechanic has arrived to assist and turns the EMD/MLW lashup into a doubleheader in order to get the 99 moving. There is great audio of the 3636 and the MLW's slipping in this clip.