New York City police commissioner Bill Bratton expressed his support Tuesday for the use of drones as a potentially reliable tool to help monitor and reduce crime in the city, calling the unmanned devices extraordinarily effective. “Myself, I’m supportive of the concept of drones, not only for police but for public safety in general,” Bratton said at a City Council’s Public Safety Committee meeting. “It’s something that we actively keep looking at and stay aware of. …