People who live near American military bases and like to use drones, should be careful. Their flying toy might become a target. A drone is a flying machine operated by a device on the ground. On Monday, the U.S. military announced new guidelines about how it may deal with private drones. Navy officer Jeff Davis is a spokesman for the United States Defense Department. He said that civilian drones in the sky could be at risk of capture or destruction. Captain Davis said the U.S. government is concerned about the safety of military sites, airplanes and people. So, he said, it is closely watching drones.