The US power grid and distribution network is incredibly vulnerable and in spite of that being well-known, literally nothing has been done to protect the systems. For example, those power distribution transformers we see in the police pictures are not just sitting around in the spare parts yard. They cost millions and take many months to build. Where the distribution wares are exposed, all it takes is a long piece of wire rope thrown over them to cause a short circuit. Nobody's ever heard of building walls around the site to protect them? Oh, wait, "walls" OMG!