(Associated Press) Before thousands of civilian drones begin flying in U.S. skies, Congress should take steps to protect the public’s privacy and prevent terrorists from hacking or jamming signals that control the aircraft, lawmakers said Thursday.

House members from both parties said at an oversight hearing that they’re worried about potential privacy and security threats as the use of small unmanned aircraft becomes widespread. The Federal Aviation Administration forecasts an estimated 10,000 civilian drones will be in use in the U.S. within five years.

Even Rep. Henry Cuellar, a Democrat and co-chair of bipartisan group of lawmakers promoting greater domestic use of drones, acknowledged that legislation to protect privacy may be necessary.

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