So I also got a close look at the motorcade from just above eye level about 30 feet out. Motorcycle officers everywhere, about 4 ambulances, 2 limo's, about 6 passenger van's with Press and guests, several marked and unmarked police cars and then the Black Suburban's with all kinds of cool electronics gizmo's on top. I would assume for communications and jamming but really don't have a clue. They were the best part of the show while being stopped on the freeway onramp.