The guy who shot three people this weekend on northern Boone County’s Gregory Drive is still out there, but sheriff’s deputies have made one arrest. Detective Tom O’Sullivan says 24-year-old Sierra Smith was apparently part of the incident somehow, and now faces domestic violence and armed criminal action charges. O’Sullivan says the search continues for the alleged lone gunman, 27-year-old Christopher Dwayne Brown, who put two people in the hospital with life-threatening injuries. Brown also apparently shot a woman, and assaulted another man, early Saturday. Those two got off with minor injuries.