Librarians at Burlington's Fletcher Free Library are doing far more these days than just shelving books. They're monitoring security cameras, trying to distinguish naps from drug overdoses and employing something called "verbal judo" to calm agitated patrons. The downtown library has always been the proverbial "community living room," open and free to all. That's long made it a welcoming place for a contingent of homeless people, some of whom spend much of their day on library grounds.... Read this story