My two cents on all most of what has been presented in this thread.
1. I live in Philadelphia and JA is very well known in the area by enthusiasts and RR employees/police, so I can confirm Budd's character portrayal: heck of a nice guy but is the "one" individual that would, could, and will ruin it for everyone.
2. Don't wish too hard for things to be like they were pre 9/11, it just won't happen. Once freedoms are taken away, it will take a revolution to get them back. Sadly this wasn't the case all the time. During WWII, rail fanning around yards, tunnels, and bridges would get you a police timeout but after VJ day, everything went back to normal until the age of lawsuits arrived. As a kid, I remember RR crews allowing me and my dad to go up interlocking towers, ride switchers, and walk around yards/engine facilities (All while being escorted). Than all of a sudden overnight it stopped because of ensuing liability in the event one of us cracked a fingernail.
3. Any organization/company who's operational impact could affect the public; water/electric utilities, refineries, and/or transportation providers, has instilled into all their employees to be mindful of any suspicious activity that may compromise public safety; especially ones that could be potential terrorists targets; from the top dog, to the lowest laborer. Just pepper in a little "Patriotism", and you now have vigilant cameras yielding wrenches, hammers, or staplers.
4. The sad reality with this post 9/11 mindset right now is that it ignores the fact that terrorism is more related to a publicity stunt produced by a company to sell a new product than it is to actual warfare. When a group conducts an act of terrorism, they are fundamentally trying to get a message out, not cripple/take out a strategic target. We are trying to fight an ideology, not an army. This fact has lead many war historians to label the actions of the PLO against Israel as actual warfare, not acts of terrorism as they are official declared. Yes, acts of terrorism can be implemented with guerrilla warfare tactics, but the idea is to gain influence and change thoughts; especially among the masses, not just governments. This why in the military it is taught that a terrorists biggest and most dangerous weapon is not a WMD but the media.
About 2 years before I was medically retired from the USMC in 2001, I was in bad physical shape. Since I had a security clearance, I was assigned to the G-2 were I would report everyday, collect all the intelligence reports, read through them, exhume the important stuff, present them to the CO, and then initiate any action if required. By honor and a sworn signed little piece of paper, I cannot divulge to this day a lot of what I read. I can say though that even though 9/11 was a big shock, it was no Pearl Harbor. Anyone who was in the military late 1999 early 2000 stationed in North Texas can confirm that there were periods that would last over month that required 100% ID checks for not just the drivers but everyone in the vehicle, even with DOD placards on the windshields. Some weeks, NOBODY could park their POVs (Personal cars) within 100 feet of any building; even cars with handicap placards. I remember going to the base shopping center and seeing the first ten rows of parking spots roped off. All of this was done because of the surveillance of "Excessive Chatter". So much info is being gathered, we have no problem in this process, but a lot is not being analyzed and/or confirmed properly leading to false alarms masking viable threats. This is how the act or terrorism and can be viable to succeed in pushing agendas. For every plan broken 15 are progressing to the next stage. Probability is on the terrorists side because if we foil one million plans in a row and they succeed with the next one to execution, they win in their minds and that morale fosters more and more.
I bring this up because I disagree with a lot of these policies and deem many as just plain unwarranted and not effective. Yes, being observant to suspicious activity can be effective, this is what saved many lives in Times Square. But I do not see the correlation of a car smoldering and a person taking pictures along a RR ROW. Reconnaissance is just that, reconnaissance. Seriously, what if someone was taking pictures under Penn Station with the intent to study were the best place to hide a bomb would be? It is not an imminent threat, many steps have to be accomplished with heightening degrees of difficulty till execution. I understand the governments mindset is to hinder activity and nip it at the bud, but the reality is, you can't without taking the rights away from everyone. Think about it though, do not shave for a year, down a kufi, dishdasha, and a pair of khussas, buy an amtrak ticket, go to the platform, and start taking pictures. You most likely wont make it 15 minutes.
Sorry to rant. Even though I am more of a modeler and enjoy reading railroad books, not much of a "field" railfan that like taking pictures, I get very upset when I read in these forums that members profess that they enjoy the hobby and taking pictures but do not because of the potential for harassment.
Also, I was looking through some of my railroad picture books (Like Four Ways West and Morning Sun). I would say that the locations that at least half of the pictures taken back in the day would be the result of blatant trespassing. But back when common sense prevailed, entering a yard or even crossing some tracks to get that sunlit loco shot was ok as long as the photographer did not get in the way.