(Portland, OR) -- The Portland Police Bureau is ordering its officers to ride in pairs as a safety precaution, following the shooting deaths of three law-enforcement officers in Baton Rouge. Portland Police Sergeant Pete Simpson tells KATU-TV the bureau began flying flags at half-staff following the deadly shootings of five Dallas police officers, and they'll remain that way for a while longer following yesterday's shootings in Baton Rouge. Simpson says other changes in Portland police policy, if any, won't likely happen until more details are made available on yesterday's shootings.