[[Richard Hanna]] was the Assistant Chief of the [[California Highway Patrol|CHP]]. He reported that the collision involving a Mariposa County Sheriff's vehicle and a Secret Service car occurred at 10:50 a.m. on March 5, 1983, between Coulterville and La Grange on Highway 132, about 25 minutes ahead of Queen Elizabeth II's motorcade.[^1] --- ### Footnotes [^1]: Seymour, Cheri. *The Last Circle: Danny Casolaro’s Investigation into the Octopus and the PROMIS Software Scandal*. First Edition. TrineDay, 2010.