A database of mentally ill people barred from buying guns lacks all the records required. Karen Bleier/AFP/Getty Images hide caption

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Workers move a section of well casing into place at a Chesapeake Energy natural gas well site near Burlington, Pa., in 2010. Ralph Wilson/AP hide caption

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Marietta Perkins falls to her knees across the street from the movie theater on Friday in Aurora, Colo. Authorities report that 12 died during an assault at a midnight premiere of The Dark Knight. Robert Ray/AP hide caption

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Louisiana Gov. Bobby Jindal checks out damage off Grand Isle, La., from the Deepwater Horizon oil spill in June 2010. Spencer Platt/Getty Images hide caption

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