Researchers at Bard College in New York report Wisconsin is among three states where law enforcement agencies use drones the most.  Many U-S police and fire departments say they are finding many ways to use drones while doing their work.  The Center for the Study of the Drone says the number of law enforcement agencies using the remote-controlled aircraft has doubled in less than a year-and-a-half.  Texas and California are the other states where drone use is growing the fastest.