The FAA must determine whether the wind farm would pose a risk to aircraft radar.

WSJ: Cape Cod Wind Farm Tiptoes Ahead

Where there is a risk tractors usually have a radar probe protruding in front of them looking for cracks in the ice.

BBC: Internet to reach South Pole

When companies are willingly to spend money on cybersecurity because they will get some of it back as a tax credit, cyber issues will then be on the radar of CFOs and risk officers as a priority and security will improve.

FORBES: Congress Needs to Go Back To School on Cyber Legislation

Conventional defence systems use one rotating radar unit to find a target and a second to subsequently track it for risk assessment.

BBC: News | In Depth | Military Fact Files

Science editor Alan Boyle's blog: Radar observations made during this week's close encounter with the asteroid Apophis have ruled out the risk of a collision with Earth in 2036, NASA says.

MSN: How to confirm we've found another Earth - Technology & science - Space - Space.com | NBC News