Non of the links u used work, but in any case they use thermal imaging to find the plants, same reason those terroristos were hiding behind it over in the middle east, and we burned it, hope the soldiers got a good smoke atleast:jointsmile: Apparently marijuana holds onto its heat longer then most plants, and if they are in large groups u bet they'll find it if there looking for it, only idea to really get around it, space em out alot more, dont do as many, multiple sites, and pretty much places some one would never go, even a noob grower.