'Mystery company' buys $800M worth of land near Travis AFB, raising concerns about national...

The United States Air Force is investigating a company that's purchased $800 million of land near Travis Air Force Base, one of the most critical military bases in the U.S. But after eight months of investigation, government officials have been unable to identify who's behind it nor rule out any threat to national security.

"We're very, very concerned about this," said Rep. John Garamendi, a Democrat who represents portions of the Bay Area. "It's so extensive and so secret and it's impossible to get any information about what's happening here."

Congressman Garamendi raised the alarm to the U.S. Air Force -- prompting a federal investigation.