alfredo joe bell two years ago durham and tonight his killer is still out there. >> the two-year anniversary. >> he was just 28 when he was shot and killed at the intersection of park avenue and liberty street living behind two kids. his brother talk to us about the case but asked not to be identified because the killer has not been caught. >> people adhere witnessed crime. they will not make an effort to come forward. >> reporter: police are trying new strategies to curb violence in the city. the trying to tied -- tracked down 19 people. >> we've seen a significant and -- decrease in crime in the last 30 days. we've made significant arrest and we continue to work this special operation and keep the pressure in the right places. >> reporter: police say the number of shooting incidents has dropped by about one half. officers took the oath that will begin patrols next week. larry smith says he's encouraging his officers to interact with the community as much as they can. >> we've asked them to get out to talk to the community and informants. >> reporter: that's what alfredo is still hoping wil