An interesting post from LDRider on motorcycles and the US Presidental motorcades
Those guys had a bad day - four bikes down in less than 24 hours is pretty grim. Presidential motorcades tend to haul ass - no surprise that the White House pool reporter's story included the phrase "...racing through Hickam Air Force Base in the motorcade..."
A number of years ago Bill Clinton and Al Gore visited Lake Tahoe at the same time and we hosted the CHP motor cops who were escorting Gore's protective detail in our fire station for a day. Things were pretty uneventful - Al had gone hiking from Squaw Valley to Donner Summit, so there wasn't much for the motor units to do. About six in the evening the call came to mount up and the motorcade went roaring off to meet Al and Tipper at the trailhead. I ran into one of the motor officers later and asked how the escort duty had been. He said it had been fun for the most part, but that evening when they went to meet the Gores, they had encountered rain and hail on Donner Summit. The Secret Service guys in the Suburbans and vans kept hammering along at 90-100 on the freeway and the CHP motor units had to keep pace in their short sleeved shirts and half helmets, getting soaked with rain and then pelted with hail. None of them went down, but I got the distinct impression that it was pretty sketchy and that the CHP contingent was not amused.
The motor units escorting the motorcade don't get a lot of leeway to exercise judgment about riding conditions and appropriate speeds, they're just expected to keep up, no matter what. Obviously, it doesn't always work...