Luke entitled this Murphyhead "ROUS."
The other night while they were camping out in their tent, Luke spotted a light of unknown origin in the distance. The strange light was moving erratically and he couldn't tell if it was 50 yards away of half a mile away. He doused the lights and waited. "Sleeping on the road is always exciting. I see a light moving in the distance. Is it a person coming towards us? ... Sleep exposed & out in the open isn't restful. I wake up every hour. Usually the worst is when in area's notorious for meth labs. ..." Later he tweeted, "Phew, no zombie attacks last nite."
Apparently it's a good thing Luke has his own ROUS to protect them!
Maybe he needs one of these.