Officer William C. Isaacs was patrolling on his motorcycle and negotiating a turn when he was thrown from his motorcycle and sustained fatal injuries. The 37-year-old patrolman had served with the Patrol for eight years and was a police officer with the city of Rialto prior to joining the CHP.

Officer Calvin Thacker (age 35) and Officer William Easson were shot and killed while making a traffic stop of a local resident. Both officers were shot twice during the stop. The suspect fled the scene but later turned himself in. He was convicted of both murders. Officer Thacker had served with the Vallejo Police Department for 7 years.

Officer William Easson (age 29) and Officer Calvin Thacker were shot and killed while making a traffic stop of a local resident. Both officers were shot twice during the stop. The suspect fled the scene but later turned himself in. He was convicted of both murders.  Officer Easson had served with the Vallejo Police Department for 5 years.