Security Alert!

While I was taking this picture (just outside where I work), I was accosted by a security guard who wanted to know what I was up to. By the time I'd explained myself, the sunset was fading away, so I only managed to take a couple of hand held snaps, rather than 'proper' tripod mounted stuff.

I'm not quite sure what he thought I might be photographing, on a small industrial estate in sleepy Gloucestershire. It's only paranoia if they're actually out to get you...