Harley-Davidson, Honda and BMW.
oh, wait.
i think the airport cops ride Smith & Wesson, not sure about the city cops. i'm curious though; how many different modes of transportation do your local police use? ours must be a nightmare to co-ordinate - there's the bike patrol, foot patrol, foot patrol "flying squad," the usual assortment of cruisers and motorcycles, the mounted patrol (horses), at least one each helicopter and airplane, jet skis, airboats, humvees, motor coaches (buses), and an M113 apc... i'd hate to be a mechanic for the CPD.
oh yeah, and you can see the chief on roller skates most weeks too...