Tue, May 21, 2013, 9:45 AM EDT - U.S. Markets close in 6 hrs 15 mins
Moore fire chief: Larger casualty tornado than we've ever had
Headlines: Apple avoided paying billions in taxes
'All you could hear were screams'
Report: CIA to hand off some drone work
Crazy conditions that were once 'mental illnesses'
Frantic Okla. parents await word on kids
Tornado's incredible trail of devastation
