A local resident allowed looks through the rubble of a destroyed home, one day after a tornado moved through Moore, Okla., Tuesday, May 21, 2013. (AP Photo/Brennan Linsley)
** FILE ** A European Union flag waves in the wind in front of the Chancellery in Berlin on Oct. 12, 2012.
Credit-card stickers announce a variety of options for charging the cost of a visit to a bowling alley in Palo Alto, Calif.
Emergency workers pull out a woman who was trapped in a building that was destroyed when a tornado ripped through Moore, Okla., on Monday, May 20, 2013. (AP Photo/The Transcript, Kyle Phillips )
Emergency workers pull out a woman who was trapped in a building that was destroyed when a tornado ripped through Moore, Okla., on Monday, May 20, 2013. (AP Photo/The Transcript, Kyle Phillips )
People go through the debris near Telephone Road and SW 4th Street after a tornado moves through Moore, Okla., on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
This frame grab provided by KWTV shows a tornado in Oklahoma City on May 20, 2013. Television footage shows flattened buildings and fires after a mile-wide tornado moved through the Oklahoma City area. (Associated Press/Courtesy KWTV)
This frame grab provided by KWTV shows a tornado in Oklahoma City on April 20, 2013. Television footage shows flattened buildings and fires after a mile-wide tornado moved through the Oklahoma City area. (Associated Press/Courtesy KWTV)
This frame grab provided by KWTV shows a tornado in Oklahoma City on May 20, 2013. Television footage shows flattened buildings and fires after a mile-wide tornado moved through the Oklahoma City area. (Associated Press/Courtesy KWTV)
