"FAA says tracking un-ID plane, it all seemed to fit. Sending people to basement at White House. Unidentified aircraft--they are taking no chances"--FOXN
"Sometimes they can't reach aircraft (by radio) so they're taking no chances, erring on side of caution. The FAA is tracking an un-ID plane."--FOXN
"Throughout Capitol Hill over the sqawkboxes it was announced that a small plane was being tracked; that was the reason being given for the evac."