A Draganflyer X6 drone lent to the Mesa County, Colo., Sheriff's Department in 2009 is used in search-and-rescue, finding suspects and identifying fire hot spots. (Mesa County Sheriff's Department via Associated Press)

A Draganflyer X6 drone lent to the Mesa County, Colo., Sheriff's Department in 2009 is used in search-and-rescue, finding suspects and identifying fire hot spots. (Mesa County Sheriff's Department via Associated Press)