Shannon Litz/Nevada Appeal News Service From left, Undersheriff Paul Howell, Bret Hicks and Mark Hounsell, of the Douglas County Sheriff's Office, are shown with alleged shooter David Scott Killen, 22. Killen, in the black hat and jacket, was booked into the Douglas County Jail on suspicion of misdemeanor assault and gross-misdemeanor destruction of property. The other man, described by police as a passenger, was not arrested.