Article Photos: Correction: LAPD-Revenge Killings-The Ruins story 4/21

FILE - This Feb. 13, 2013 file photo shows Riverside Police officers carrying the casket of fellow Riverside Police officer Michael Crain, during the burial ceremony at the Riverside National Cemetery in Riverside, Calif.  Wednesday, Feb. 13, 2013. The 34-year-old Crain was ambushed in his patrol car on Feb. 7. Authorities believe the shooter was ex-Los Angeles policeman Christopher Dorner.  (AP Photo/Damian Dovarganes, File)