** FILE ** This file photo released Saturday, Aug. 28, 2010, by the Las Vegas Metropolitan Police Department shows Paris Hilton in a police booking photo in Las Vegas. The district attorney in Las Vegas says Paris Hilton will avoid jail time on drug charges under the terms of a plea deal worked out with prosecutors, Friday, Sept. 17, 2010. (AP Photo/Las Vegas Metropolitan Police Department)
In this 1998 photo, Leo Mascheroni and his wife Marjorie pose in their Los Alamos, N.M. home. A scientist and his wife who both once worked at Los Alamos National Laboratory were arrested Friday, Sept. 17, 2010 after an FBI sting operation and charged with conspiring to help develop a nuclear weapon for Venezuela. (AP Photo/The Santa Fe New Mexican, Clyde Mueller)
In this undated photo released by Muttahida Qaumi Movement's senior politician Imran Farooq speaks in London. Gangs torched vehicles and a shop in Pakistan's largest city of Karachi on Friday, Sept. 17, 2010, after Mr. Farooq was stabbed to death in London. Farooq's body was found in north London Thursday with multiple stab wounds and head wounds. (AP Photo/Muttahida Qaumi Movement)
Soldiers of Pakistan's paramilitary forces stand guard on the roadside as tension mounted after killing of Pakistani local leader Imran Farooq in London, on Friday, Sept. 178, 2010 in Karachi, Pakistan. Gangs torched vehicles and a shop in Karachi on Friday after Farooq was stabbed to death in London. (AP Photo/Fareed Khan)
Police officers at the scene of a shooting on Capitol Hill in Washington on Friday, Sept. 17, 2010. Authorities in Washington say police shot a man who pointed a gun at them on Capitol Hill. (AP Photo/Jose Luis Magana)
Police officers at the scene of a shooting on Capitol Hill in Washington on Friday, Sept. 17, 2010. Authorities in Washington say police shot a man who pointed a gun at them on Capitol Hill. (AP Photo/Jose Luis Magana)
Police officers at the scene of a shooting on Capitol Hill in Washington on Friday, Sept. 17, 2010. Authorities in Washington say police shot a man who pointed a gun at them on Capitol Hill. (AP Photo/Jose Luis Magana)
Police officers at the scene of a shooting on Capitol Hill in Washington on Friday, Sept. 17, 2010. Authorities in Washington say police shot a man who pointed a gun at them on Capitol Hill. (AP Photo/Jose Luis Magana)
Police officers at the scene of a shooting on Capitol Hill in Washington on Friday, Sept. 17, 2010. Authorities in Washington say police shot a man who pointed a gun at them on Capitol Hill. (AP Photo/Jose Luis Magana)
