I just read read an article about Wireless Networks on Security Focus with origins at the Associated Press. It looks like the government is making an attempt to be more proactive rather than reactive to Network Security issues.

Secret Service agents are putting a high-tech twist on the idea of a cop walking the beat. Using a laptop computer and an antenna fashioned from a Pringles potato chip can, they are looking for security holes in wireless networks in the nation's capital.
Read the entire article here .