I've told this story here before, but in 1998, I was coming back from a rifle range with a buddy of mine. Both of us were rail fans, avid shooters, and active duty US Army at that time. I won't name the place or RR involved, but it was on the East Coast. We were stopped at a bridge over a RR track, cameras in hand, waiting for a freight we saw a long way off when crossing the bridge. The bridge was on a public road but within the boundries of our Army post (there's no reason to be on the road as it only goes to the main gate and nowhere else). We'd stopped, jumped out with cameras (guns in the car, unloaded and in their cases, by the way) and were standing on a sidewalk just shy of the bridge itself. We could then see the freight was in the hole. So, I took advantage of the pause to go use the "green latrine." Nobody could see me well off the roadway. I was down there for a minute or so when I heard yelling and scuffling going on at the bridge. I ran up the embankment around the front of my car to see two guys in street clothes pushing my buddy around yelling at him, talking about, "giving him a good thumping." I had no cell phone to call the law, so I quietly got into my SUV, pulled out my M-1 Garand rifle and quickly loaded a clip and jumped back out.
I ran around the back of my car and leveled the rifle at one of them, and said on colorful language to back off or I'd shoot. You've never seen people jump back so fast! Their hands went up, their eyes got as big as pie plates, and I’m pretty sure I literally scared the poop out of one of them. Turns out, they were plain clothes (and unarmed) RR cops. As soon as they ID'd themselves, they launched into this whole thing about how they'd throw us under the jail for this, that I'd be convicted of a felony for
attempted murder on a cop, etc. Jim, my buddy, told them they were full of crap (keep in mind, I'm still holding the rifle at this point but no longer pointing it at them) and if they were lucky, they'd still have a job by the end of the day. He pointed out that they had started pushing him around, threatening to beat him up, and never ID'ing themselves until I'd pulled the rifle out on them.
Then, Jim pulled out his MP badge.

Never have two men changed tact so fast. Once they realized that they were in the wrong, it was suddenly apologies and the word "sir" got used a lot all of a sudden!
Jim got their employee #s and did have a long discussion with the local cops and the RR over that. We both got formal apology letters from the RR (I lost mine during one of my later moves, darn it). I tracked down Jim a couple of years ago and he said he was told soon after this happened that the cops involved would be “seeking other opportunities elsewhere” over the incident.
I did hear a funny story once (might have been here?) about a guy getting flipped off by a conductor/engineer while he was filming a train going by. The guy was able to take the still-frame from the video and email it to that railroad company along with the date and time. Think he actually got a "im sorry" letter from the railroad if i'm not mistaken.
That was me, posting about my best friend back in Florida in the 80s. He was with some pals of ours, around Chatsworth rocks in CA. An Amtrak train went by, fans waved and shutter clicked. After the train went past one of the guys asked the others, "Hey, did the hogger just flip us off?" None of the rest of them caught that. Sure enough, he gets back to Florida, develops his film and there it is, big as day! He mailed a letter to the president of Amtrak with a print of the photo with the date and location so the train could be ID'd. He got a long apology letter from the President (I guess it was Claytor at that time) and I can only guess what happened to the engineer.
