There are no experts......
But in private and contract operations we had to learn as quickly as possible, because when our ops made mistakes, like using too much force in a 'stop' or on a nightclub floor, or carrying money on transit, the cops were all over them, and they did not get the back-up or support that our cops gave each other.
So people like me had to train ops to work in
legal and physical safety in ways which were quite unique to our jobs. That's the 'class' I came out of, and wrote about in our Security Magazine for so many years.
The reason why folks like me have to mention these things is because we do not have academic qualifications from Uni's......... there are no specific quals..... Uni lecturers would often come to our courses.... to sit in and gather.... and often their grasp of our work was very poor.....
....... those that can do..... those that can't.... ?
...so we scratch our balls now and then!!
Sometimes folks make 'em itch...... :biglaugh: