Police patrol cars and motorcycles escort the hearse containing the casket of Riverside Officer Michael Crain outside the Grove Community Church in Riverside, Calif., Wednesday, Feb. 13. 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. (Associated Press)

Photo by: Damian Dovarganes

Police patrol cars and motorcycles escort the hearse containing the casket of Riverside Officer Michael Crain outside the Grove Community Church in Riverside, Calif., Wednesday, Feb. 13. 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. (Associated Press)