Federal Bureau Of Investigation

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This combo made from undated photos provided by the FBI shows cousins Lyric Cook (right), 10, and Elizabeth Collins, 8, who have been missing since July 13, 2012. (Associated Press

**FILE** Henry Hill, whose life as a mobster and FBI informant was the basis for the Martin Scorcese film "Goodfellas," sits Feb. 22, 2005, in the Firefly restaurant in North Platte, Neb. (Associated Press)

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FBI Director Robert S. Mueller III told a Senate committee Wednesday that leaks threaten law enforcement operations, put sources' lives at risk and make it harder to recruit them, and damage ties with foreign law-enforcement partners. (Associated Press)

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**FILE** FBI Director Robert S. Mueller III testifies on May 16, 2012, on Capitol Hill before the Senate Judiciary Committee. (Associated Press)

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FBI Special Agent Stephen Ivens has not been seen since Thursday, FBI officials said. (AP Photo/Burbank Police Department)

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FBI Director Robert S. Mueller III testifies to the House Judiciary Committee on Wednesday in favor of reauthorizing the FISA Amendments Act. (Associated Press)

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Thomas "Tommy Shots" Gioeli is led away by FBI agents after his arraignment in 2008. Gioeli was convicted Wednesday by a federal jury in Brooklyn on racketeering charges but acquitted in the 1997 slaying of a New York police officer. (Associated Press)

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**FILE** This photo released May 15, 2003, by the FBI shows Fahd al-Quso, who was charged as an al Qaeda member who helped plan the attack on the USS Cole that killed 17 American sailors in 2000. (Associated Press/FBI)