He's a buddy of the chief (donated to his re-election and gave the department some cars) and wanted to "play" cop
he reminds me of one of those rich millionaires in that Ice-T movie that hunts homeless people for fun.
Donate a few cars, and real cops will let you tag along, carry guns and yes, even shoot guns. You don't training or certifications or even ethics... you've got moxie, kid!