美国执法部门望获得对非军用无人机采取行动的职权

The proliferation of nonmilitary drones in the United States poses a growing national security threat, top U.S. security and aviation officials warned on Wednesday as they pressed Congress to pass legislation that would allow agents to target and potentially take down suspicious drones.

While the recreational and commercial use of drones has skyrocketed in recent years -- there are now more than 1 million unmanned aircraft in the U.S. -- criminals and terrorist increasingly use the technology for nefarious purposes, according to officials from the FBI, U.S. Department of Homeland Security and Federal Aviation Administration who testified before the Senate Committee on Homeland Security and Governmental Affairs.

In recent years, Islamic State and other terrorist groups have used cheap commercial drones to conduct reconnaissance and launch attacks. Officials said criminal gangs have used unmanned aircraft to traffic drugs across the U.S.-Mexico border and fly contraband into prisons.

But law enforcement agencies lack the legal authority to target drones even if they're involved in criminal activity. That is because drones are currently designated as aircraft for the purposes of federal law. Current U.S. laws make it a crime to damage or destroy an aircraft or otherwise interfere with its operations.

The U.S. departments of Defense and Energy already have the authority to target suspicious drones that fly over military and nuclear facilities. The proposed legislation would extend that authority to the departments of Justice and Homeland Security.