Former Petraeus Adviser Kilcullen: U.S. Should be 'Air Referee,' Avoid Arming Rebels, in Libya by Rick Klein, ABC News. BLUF: "Kilcullen, an author and former adviser to Gen. David Petraeus, said the U.S. should think about its role as 'kind of like the air referee. Oversee what's going on on the ground from the air and ensure that nobody, regardless of what their political orientation is, takes it out on civilians...'"