Train derailment on the ND&W Railroad

Napoleon Defiance and Western Railway train with PREX 1603 / PREX 3054 traveling east when a boxcar jumps off the track. In the 50 or so times I’ve filmed them this is actually the first time I filmed something derail. I’ve seen plenty of derailments along the line but never had a camera in the right place! After the engine sees that the car is plowing ballast they uncouple from that car and continue on without it.