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    ** FILE ** In this undated photo released by the U.S. Department of Defense and obtained by shows flag-draped coffins of U.S. war casualties aboard a cargo plane in Dover, Del. News organizations will be allowed to photograph the homecomings of America's war dead under a new Pentagon policy, defense and congressional officials said Thursday. (AP Photo/Department of Defense via, File) ** NO SALES **

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    Randy Vincent, a construction worker by trade in the summer, inspects lemon stars at D.S. Cole Growers in Loudon, N.H., Thursday, Feb. 26, 2009. Spring's arrival on the calendar is less than one month away.(AP Photo/Jim Cole)

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    A Beech T-34 airplane is lifted on to the Intrepid Air and Space Museum in New York, Thursday, Feb. 26, 2009. In addition to the airplane, the Intrepid Museum added a replica of the Gemini 3 space capsule, which the aircraft carrier pulled out of the water in March 1965. (AP Photo/Seth Wenig)

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    Feb. 25: SDT Waste and Debris Services employee, Jeremy Licciardi uses a skid loader to collect trash left in the streets from Mardi Gras along Boubon Street in New Orleans.

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    Feb. 25: Anthony Kim, right, and Lin Wen-Tang, of Taiwan, walk around the pond on the fourth hole during their opening round match at the World Golf Championships Accenture Match Play Championship in Marana, Ariz.

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    Feb. 25: A construction worker wipes some dirt off the Babe Ruth monument after it was lowered into Monument Park at the new Yankee Stadium in New York, Wednesday, Feb. 25, 2009.

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    Feb. 25: Recording artist Usher waits to testify on Capitol Hill in Washington, Wednesday, Feb. 25, 2009, before the House Education and Labor Committee.

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    Feb. 24: In this photo released by the Florida Keys News Bureau, Louis Church of Muncie, Ind., prepares his laptop computer and telescope to photograph the night sky during the 25th Annual Winter Star Party on West Summerland Key, Fla. Some 600 amateur astronomers from around the world are in the Florida Keys through Saturday, Feb. 28, attracted by the opportunity to view large number of southern constellations, comets, stars and other celestial objects visible from the Keys which are mostly void of light pollution found in more populous regions.