SALINA (AP) — The police department of a central Kansas city of 50,000 is adding two police officers to respond to a growing gang problem that is linked to the recent shooting death of a teenager. Salina Police Chief Jim Hill told the city commission Monday night that the two officers will be devoted to helping respond to violence arising from a feud between two gangs. The gangs are small but concern grew after the July 25 shooting death of 17-year-old Derek Rico in a city park.