It left a trail of light, turning colors from white to yellow to orange and red, and turned into sparks and then the train was smoke for about a second
Terminal flash
Observation
Yes
Remarks
It flashed white and yellow, brighter than before, and then appeared to fall into pieces which sparked and went out slowly
Fragmentation
Observation
Yes
Remarks
I think it fell into about 7-10 pieces, which blinked out one at a time, and the main piece went out last