Increasing use of drones in U.S raises privacy concerns at Drone hearing . Their use may require new definition of unreasonable search , Sen. Klobuchar says . Senate industry expert says the FAA has strict rules about using the aircraft . Drones also used for tracking crops , livestock and surveying buildings in U.S. .
Increasing use of drones in U.S. raises privacy concerns at Senate hearing . Their use may require new definition of unreasonable search , Sen. Grassley says . Drone industry expert says the FAA has strict rules about using the aircraft . Drones also used for tracking crops , livestock and surveying buildings in U.S .