Shane Brennan (born 1957, Bendigo, Victoria, Australia) is an Australian-born U.S.-based television writer and producer, best known as the executive producer of the American CBS drama NCIS, as well as the creator of the NCIS spin-off series, NCIS: Los Angeles.Brennan's other television credits include Special Squad, The Flying Doctors, All Together Now, King & Maxwell, State Coroner, Stingers, Flipper, CSI: Miami, and Summerland. By 1981, he had abandoned journalism for television scriptwriting. He has early credits on Special Squad, Prime Time, In Between, Embassy, The Flying Doctors, Altogether Now and Ocean Girl. Wikipedia