That's certaily a good railroad story. To bad the engineer who joined the birds broke his head. I guess he didn't want to be around a crackup of all the aviation gas cars and munition cars. Too bad there were only four cars with power brakes on a train like that.
Here's a link to a Wiki article "Trans-Iranian Railway." The section on Engineering and geological challenges describes unusual conditions. https://en.wikipedia.org/wiki/Trans-Iranian_Railway
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Top photo: picturesque railway bridge at Do Ab, Mazanderan Province on the Gorgan — Bandar Shah line.
Middle: 1000 hp Alco GE road switcher pulling a train of tank cars. Not the world's most powerful locomotive.
Bottom: supposedly an American locomotive with its number written on the smokebox in chalk or paint.