Unlike you, I have been a real LEO, not one voted in by people. ie, we had to actually pass both practical and law exams. We had to know verbatim, the meaning of the word 'assault' in law terms, the meaning of a 'public place' in law terms - that was just the beginning... You don't get voted in by a popularity contest like your deputies do over there. You have to meet stringent intelligence, moral and physical criteria. You have to pass a series of physical exams, as well as six written exams, be interviewed by four officers including an inspector. Your whole family and extended family background are looked into. They concoct at dossier an inch or two thick on your schooling and previous employment. It takes anywhere from six months to two years to complete your application.
Once that is all done, and they are satisfied, you then have to go to the police college for six months, whereby you have to pass more law and practical exams where the minimal pass rate for all activities is 75 percent, although they frown upon that result, and really want you to get 85 percent or more.
I am pretty sure that in the big city police departments, and with the likes of the ATF and FBI, it is similiar which is probably the antithesis of your experience.
So while you might strut your stuff around here, I doubt you'd get first base over here. That being said, investigations are universal, and you don't have anything particularly special about the way you carry investigations over there (in fact we'd often use experiences from US, GB and Aus as practical examples of how to carry out an investigation). Your law, like ours, is based on British Common Law as opposed to the other Western Norm, the Napoleonic Code. There is nothing too hard about it as long as you have a few brain cells to rub together.
As for my original contention, I still stand by it. You assume because GZ has a CCW license, the way his attitude towards that right is discharged, would be the same as yours. Seems like an amateur thought process from an amateur 'investigator'...