I lightly bumped an underpass on the old Sante Fe with an excavator some years back. I bumped the underpass at about 1 mph, didn't like it and backed up and parked and started to map a different route. The schidt hit the fan, in ten minutes, I had a Suburban full of armed railroad dicks all over my ass, accusing me of sabotage, terrorism, un American activities, train robbery etc. They searched the tractor, looking for bombs I suppose, handled the fire extinguisher like it was a plutonium bomb. Sheesh, what a bunch of Barney Fife wannabes.