SHIPROCK, N.M. (KRQE) – The FBI is doubling the reward for a cold case on the Navajo Nation. Hoping someone will finally speak up and help them solve the murder of a man that happened more than a year ago. Isiah Terrell Billy was found dead in a gully near …SHIPROCK, N.M. (KRQE) – The FBI is doubling the reward for a cold case on the Navajo Nation. Hoping someone will finally speak up and help them solve the murder of a man that happened more than a year ago. Isiah Terrell Billy was found dead in a gully near …