Well, they or somebody like them have already used bolt-cutters to cut the chains to the gate to access a walled area to steal over $6,000 worth of equipment from ABP's HQ. They also succeeded in getting Glenn Spencer arrested when he was firing his rifle, the following evening, to scare off their next foray into the HQ property. I guess if you're defending your property against thieves and potential murderers (this incident followed many death threats) you better make sure no rounds ricochet off the ground to strike any inanimate objects.