`` But what can be done illegally , and how can the government prevent that from happening ? '' 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 . Comment:
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 . Comment: