USA Today article:

"The Transportation Security Administration requires valid government-issued identification, but "not having ID does not necessarily mean a passenger won't be allowed to fly," TSA spokesman Greg Soule says. TSA officials can verify the identities of passengers who provide additional information through other methods such as public databases, he says. "Showing other types of ID may be useful," Soule says"

http://travel.usatoday.com/news/stor...ded/47515166/1