Been riding most of my life, and guarantee I can't do that. It was amazing display of what CAN be done with a dresser. I only wish I had those skills. Thanks for sharing.
Nothing special about those bikes at all. On the older bikes guys would saw off the rubber stops.....the newer stops are built into the neck so they are left alone.
As someone else pointed out, LEO's have the distinct advantage of being paid to improve their skills. All the basic police motorcycle schools I've seen are 2 full weeks long. On top of that, riders are prepped for weeks leading up to the school. Once certified, they usually recert 1-4 times a year (that's another 8-40 hours of training per year).
The biggest advantage LEO's have is the ability to practice and push the limits on someone elses bike. Those bikes get dropped a lot by new riders. They get taped up with fire hose, radiator hose, etc. to protect the crash bars......something no sane person would do with their personal bike.