Its funny,

You see these Documentaries and they talk about how Marijuana Growers carry weapons, and how dangerous it is and try to make it look like something from a mobster flix...

But this is a prime reason growers have weapons, not necessarily to shoot at the law enforcements. But because people try to come in and jack your stuff...

And look what happened..the suspects even had weapons... so of course it would be wise to pack heat too!