Some Okla. lawmakers are pushing for mandatory safe rooms in schools and new buildings.More >> Some Okla. lawmakers are pushing for mandatory safe rooms in schools and new buildings.More >> 19-year-old Okla. men who took cover in cellar use cellphones to get video of deadly tornadoMore >> 19-year-old Okla. men who took cover in cellar use cellphones to get video of deadly tornadoMore >> 'The life of the party': 3rd grader who loved to sing among the young Okla. tornado victimsMore >> 'The life of the party': 3rd grader who loved to sing among the young Okla. tornado victimsMore >> Oklahoma tornado ripped through as many as 13,000 homes, damage could top $2 billion; 24 deadMore >> Oklahoma tornado ripped through as many as 13,000 homes, damage could top $2 billion; 24 deadMore >> Oklahoma tornado ripped through as many as 13,000 homes, damage could top $2 billion; 24 deadMore >> Oklahoma tornado ripped through as many as 13,000 homes, damage could top $2 billion; 24 deadMore >> IRS official in targeting probe says she did nothing wrong - then says no more, taking the 5thMore >> IRS official in targeting probe says she did nothing wrong - then says no more, taking the 5thMore >> Man shot to death in Fla. while being questioned in Boston Marathon bombing investigationMore >> Man shot to death in Fla. while being questioned in Boston Marathon bombing investigationMore >> Former IRS commissioner knew tea party groups targeted in 2012; says he didn't tell anyoneMore >> Former IRS commissioner knew tea party groups targeted in 2012; says he didn't tell anyoneMore >> Jodi Arias tells jury she can contribute from prison if she's allowed to liveMore >> Jodi Arias tells jury she can contribute from prison if she's allowed to liveMore >> AP photographer describes rescuers pulling children from tornado-flattened Oklahoma schoolMore >> AP photographer describes rescuers pulling children from tornado-flattened Oklahoma school.More >>