Los Angeles police Sgt. Bill Smith (right) talks with Marine 1st Lt. Tylor Johnston as they ready for a ride-along in Los Angeles. Seventy Marines recently patrolled streets with the Los Angeles police in a weeklong exercise to help the Marines with law enforcement in Afghanistan. (AP Photo/Jae C. Hong)

Photo by: Jae C. Hong

Los Angeles police Sgt. Bill Smith (right) talks with Marine 1st Lt. Tylor Johnston as they ready for a ride-along in Los Angeles. Seventy Marines recently patrolled streets with the Los Angeles police in a weeklong exercise to help the Marines with law enforcement in Afghanistan. (AP Photo/Jae C. Hong)