Wow, sounds like you had a pretty close call there Jeditojan! A while back I did a lot of shots of a nearby power station in black and white (a few of them are in my gallery), although I took them from a public footpath that run around the site I had push through some of the undergrowth and stick the lens of the camera through the fence that surrounds the place, it was at a time when there was still a lot of fear about terrorist activity so I kept expecting to feel a hand on my shoulder, lol.
However I remember when I used to work there - on my first week I was stopped at the gate by the security and asked for my pass. I said I hadn't been issued with one as I had only just started and they just said ok, and let me in anyway! Doubt that would happen now.

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"Dodging and burning are steps to take care of mistakes God made in establishing tonal relationships.  ~Ansel Adams"