Out here in California, people sport KMA 357 license frames. Thats some police code and supposedly warns brother officers there is a badge in the car. Now everybody has one.Then there is "back the badge" " I support our local Police"etc. The fire department personel tick me off the worst. It seems de rigeur for them to buy flame red trucks, get Cal personal license plates ( a fireman walking terminator style out of flames), a bracket that says" my othercar is a firetruck" and huge gold FD badge decals. This one local drives like he truly is going to a fire off duty. I finally videotaped him and sent it to the district commander.My neighbor's reired LAPD. He gave the best strategy all around-be anonymous,very anonymous.