Police are hunting for a gunman who fired as many as two dozen shots at a sweet 16 birthday party Saturday night. WSB-TV reports four students from Shiloh High School in Snellville were wounded. As many as 75 teenagers were partying inside a private home, according to an account from 11alive.com. Witnesses said they heard arguing outside right before the shooting started. The gunman is described as an uninvited guest who showed up with a rifle, stood outside the house and shot at the windows.