Some insights and true stories on Presidential protection ...
"Bill Gage joined the Secret Service in 2002 and soon found himself in a major national security investigation in which the IRA and North Korea were involved in counterfeiting US currency with such detail that the fake bills could not be detected. <= First of video
"Later, he made it on the Secret Service Counter Assault Team (CAT) protecting the President, Vice President, and other select principles."
So, next time you see Trump's protection around the car or stage, you'll have a bit more insight into their world.
Start about 1hr 5min marker.
https://www.youtube.com/watch?v=h4C1EwNAhcM