From Friday morning until Sunday afternoon, there will be a cop camped out on the roof of Krispy Kreme on 71st Street here in Tulsa. Why? To raise some serious dough (heh) for Special Olympics Oklahoma. As if a cop on the roof wasn't enough, look also for displays of patrol cars, motorcycles, armored vehicles, Mobile Command Centers, mounted patrols, Beat the Heat police cars, rollover simulators, police robots and many others cool law enforcement gadgets. Kids can walk away with goodies like coloring books, trading cards, stickers, tattoos and balloons. If that's not a good trade for a small donation and a donut, I don't know what is.