Thanks, J_A_B, I wasn't aware of their attitude towards railfans.
Yeah, up north I'd never get that sort of rude reception when dealing with the shortlines, even today. I was pretty shocked to have someone suggest that I was up to no good with my picture-taking.
I'm a pilot as well, and the heightened airport security has created some interesting situations. I recall one night, I got pinned down at a grass strip south of Memphis by a T-storm. I called the place I rented the plane from, and told them to not wait up for me, as I was going to be late. Anyways, I get back to the small regional airport at 2 in the morning, secure the airplane, pick up my flight bag and walk off.. However, my car was on the other side of the fence. The FBO was locked down, nobody home. I soon found that I was trapped inside a cage of barbed wire surrounding the airport. I walked up and down the fenceline, hoping to get noticed by a guard or something, but no luck. I ended up having to carefully (as possible) pitch my flight bag over the fence into some tall grass, and scale the barbed-wire fence. I found the whole thing pretty humorous. The fence couldn't keep this lowly Cessna pilot from crossing the boundary, yet they expect it to stop terrorist acts?
Anyways, I guess my dealings with the HSA haven't been so great to this point...