A motorcycle patrol officer with the California Highway Patrol demonstrates advanced riding techniques after a motorcycle safety awareness press conference aboard Marine Corps Air Station Miramar, California, May 14. The demonstration is a part of a course all Marines who ride a motorcycle must attend. - A motorcycle patrol officer with the California Highway Patrol demonstrates advanced riding techniques after a motorcycle safety awareness press conference aboard Marine Corps Air Station Miramar, California, May 14. The demonstration is a part of a course all Marines who ride a motorcycle must attend.