Police in the UK are using thermal imaging to look for "hot spots" which could indicate that cannabis is being grown in a residence or other building. Sounds like a good idea, right? Well, maybe not. Seems one of their recent raids turned up a
pair of guinea pigs in a garden shed, together with a space heater to keep them warm, and not an ounce of pot in sight.
Personally, I'm reminded of the old LARD song, "Drug Raid at 4am".