BELTON â Garett Galloway, the younger brother of Marvin Guy â the man accused of killing a Killeen police detective more than six years ago â was on hand Wednesday at the Bell County Justice Complex on his brotherâs behalf. âYou canât ask for better weather,â Galloway said, noting that the last similar event he took part in, on his brotherâs birthday, had colder temperatures. Galloway took part in an early afternoon news conference at the justice complex, which in his words represents a push for action in his brotherâs case. âWeâre trying to put a little fire under these guys to get something done,â he said.