Ooh, thanks for sharing, Dr. V! That's some of my railfan stomping grounds, as the first part of the video is filmed at Amtrak's (ex-PRR) and CSX's (ex-B&O) Susquehanna River bridges in Perryville, Maryland.
If I could only go back in time to appreciate that era more; I was too young. I do, however, remember some of the grade crossings on the Northeast Corridor, before they were eliminated and the many overpasses built. Those trains were flying through this area even then, and I shudder today when I think of how many times I was a passenger in a car or a church bus that went around malfunctioning crossing gates!
Dave Foxx