external In the Media September 5, 2024 Bobby McDonald, a criminal justice lecturer, discusses a crash involving three vehicles in vice presidential nominee Tim Walz's motorcade that was under Secret Service protection. https://www.cbs58.com/news/secret-service-shares-more-information-on-safety-protocol-after-crash-retired-agent-explains-variables robert-e-mcdonald news-all news-in-the-media year-2024 month-september name-robert-e-mcdonald