Question About a scene in the movie THE YARDS

[pelhamlocal 288]

I have a question about, what they were doing to the trains, at 0:32

 

thnx

[jgood6195 216]

Perhaps disabling the brakes....?

[User 2,251]

That guy in the white shirt was on Third Watch.

[pelhamlocal 288]

Oh ok thanks. I know it's just a movie, but aren't the brakes, controlled by a battery operated air compressor, and since these were LIRR mp7?'s, would there actually be an arc? ah i just thinking into too much again. Thnx again though