I hired a student for the summer and he visited from DC (working for an agency there) where coat/tie was normal work attire. At the airport, they somehow rented him a black lincoln towncar. In this town he stood out looking like a fed as much as it's possible to do without wearing a jacket with yellow letters. A lot of people here deal with various three letter federal agencies often but usually on their turf. The agents I know here fit right in

Anyway, I still love giving him a hard time about his fed car... just as he was escaping being a fed, somehow they smelled it on him!