Agree with this. We were in a situation where this kept happening. We moved the fridge to a non GFCI circuit and haven't had a problem since.

Late to the post. The MBTA has an app called MBTA see something say something. It works very well. I had an issue with a mentally unstable guy who was smoking, urinating, and shouting at people. One stop later the MBTA Police were on the scene and they pulled the guy off the train.