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.

Officer Michael S. Griffin was patrolling along U.S. Highway 50 near the Sacramento-El Dorado County line when the wheel of his motorcycle apparently developed a high-speed wobble that sent the motorcycle out of control. Griffin was thrown to the ground and died five days later. The 33-year-old patrolman had served in East Los Angeles, Norwalk, Placerville and Sacramento during his nine years as a CHP member.

Officer Martin J. Tripptree’s motorcycle collided with an automobile in Carmichael on April 22, 1964. Tripptree underwent several operations for head injuries, but succumbed after a long struggle. The 41-year-old patrol officer was a nine-year member of the CHP. Officer Tripptree served in Barstow after graduating from the Academy in 1956 and then transferred to Sacramento in 1957.

Officer Robert G. Smith was involved in a high-speed pursuit on December 12, 1965. During the pursuit he struck a third vehicle, west of the Long Beach Freeway. Smith was pronounced dead on arrival at Long Beach Memorial Hospital.