An Indian Army tank T-90 is seen during a military exercise in Jagraon, in the northern Indian state of Punjab, Friday, May 19, 2006. The Army is holding the Sanghe Shakti, one of its largest exercises, in Punjab to validate its new doctrine of a proactive strategy to overcome hostile forces. (AP Photo/Channi Anand)

Indian Army T-90 tanks take part in a military drill named "Sanghe Shakti" in the outskirts of Ludhiana, some 350 kms north-west of Delhi, 19 May 2006. India's army has a strength of 1.1 million personnel with many currently involved in United Nations Peace Keeping operations throughout the world. AFP PHOTO/ MANAN VATSYAYANA (Photo credit should read Manan Vatsyayana/AFP/Getty Images)

Indian army officers wear chemical protection suits as they perform a decontamination procedure during a military drill named "Sanghe Shakti" in the outskirts of Ludhiana, some 350 kms north-west of Delhi, 19 May 2006. India's army has a strength of 1.1 million personnel with many currently involved in United Nations Peace Keeping operations throughout the world. AFP PHOTO/ MANAN VATSYAYANAVATSYAYANA (Photo credit should read Manan Vatsyayana/AFP/Getty Images)

An Indian Army officer stands next to a Infantry Armoured vehicle under a camoflage net during a military drill named "Sanghe Shakti" in the outskirts of Ludhiana, some 350 kms north-west of Delhi, 19 May 2006. India's army has a strength of 1.1 million personnel with many currently involved in United Nations Peace Keeping operations throughout the world. AFP PHOTO/ MANAN VATSYAYANA (Photo credit should read Manan Vatsyayana/AFP/Getty Images)

An Indian Army T-72 tank crosses over a temporary brigde during a military drill named "Sanghe Shakti" in the outskirts of Ludhiana, some 350 kms north-west of Delhi. AFP PHOTO/ MANAN VATSYAYANA (Photo credit should read Manan Vatsyayana/AFP/Getty Images)

An Indian soldier mans a machine gun on a T-90 tankas he takes part in a military drill named "Sanghe Shakti" in the outskirts of Ludhiana, some 350 kms north-west of Delhi, 19 May 2006. India's army has a strength of 1.1 million personnel with many currently involved in United Nations Peace Keeping operations throughout the world. AFP PHOTO/ MANAN VATSYAYANA (Photo credit should read Manan Vatsyayana/AFP/Getty Images)

An Indian Army soldier wears protective gear and brushes C-8 powder on himself that will protect him from chemical weapons, during a military exercise in Jagraon, in the northern Indian state of Punjab, Friday, May 19, 2006. The Army is holding the Sanghe Shakti, one of its largest exercises, in Punjab to validate its new doctrine of a proactive strategy to overcome hostile forces. (AP Photo/Channi Anand)

Residents of the municipality of Carirubana, in the coastal state of Falcon, 300 km from Caracas, block an armoured vehicle at the Oil Refinary Complex Paraguana during a military exercise conceived to fight a "foreign attack" , 17 May 2006. AFP PHOTO/STR (Photo credit should read STR/AFP/Getty Images)

Soldiers take cover behind a car as an "enemy armoured vehicle" is deployed at the Oil Refinary Complex Paraguana during a military exercise conceived to fight a "foreign attack", 17 May 2006 in the coastal state of Falcon, 300 km from Caracas. AFP PHOTO/STR (Photo credit should read STR/AFP/Getty Images)

A U.S. armoured vehicle lies burning after a U.S. convoy was hit by a roadside bomb in the Dora neighbourhood of Baghdad, Iraq Friday, May 19, 2006. The blast heavily damaged the armoured vehicle used by explosive ordnance disposal teams to search for mines and one U.S. soldier was wounded and evacuated from the site, according to the U.S. command. (AP Photo/Asaad Muhsin)

A young internally-displaced child at a camp for displaced Iraqis who have fled violence, many coming from the Abu Ghraib area of Baghdad, drinks water from a tap at the camp in the city of Diwaniya, 180 kilometers (110 miles) south of Baghdad, in Iraq Thursday, May 18, 2006. (AP Photo/Alaa Al-Marjani)

President Bush, left, waves as he rides a dune buggy driven by Rocky Kittle, right, as he tours the Yuma Sector Border along the U.S. Mexico International Border Thursday, May 18, 2006 in San Luis, Ariz. (AP Photo/Pablo Martinez Monsivais)

President Bush climbs out of a "sand rail" with United States Border Patrol agent Rocky Kittle near the U.S.-Mexico border west of the San Luis, Ariz., port of entry, Thursday, May 18, 2006. Bush visited Yuma and San Luis in southwestern Arizona today to promote his new immigration reform and border security proposals. (AP Photo/Jack Kurtz, Pool)

Thousands of cars are backed up on both southbound Interstate 805 and Interstate 5 as the highways merge together near the San Ysidro Port of Entry, the world's busiest border crossing, linking San Diego and Tijuana, Mexico, after federal authorities shot and killed the driver of a car headed for Mexico, Thursday, May 18, 2006, in San Diego. U.S. Customs and Border Protection officials were trying to stop a black SUV that was under surveillance for suspected immigrant smuggling. (AP Photo/The San Diego Union-Tribune, Nancee E. Lewis)

The SUV involved in a shooting with border patrol agents is seen parked at border gates to Tijuana, Mexico, Thursday, May 18, 2006 in San Ysidro, Calif. The driver of the SUV was killed during the shooting. U.S. Customs and Border Protection officials were trying to stop the SUV which was under surveillance for suspected immigrant smuggling. A motorist said that a federal agent rapped on the vehicle's window with his baton, but the driver accelerated and the agent opened fire. (AP Photo/Chris Park)

Axel of the New York City Police Canine Unit keeps watch in Times Square 18 May 2006 in New York. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

A KC-135 Stratotanker from Altus Air Force Base, Okla., refuels four F-16 Thunderbirds in the skies 25,000-feet over Winslow, Ariz., on Thursday, May 18, 2006, as members of the U.S. Air Force Air Demonstration Squadron from Nellis Air Force Base, Nev., fly to Altus for an air show on Saturday,. (AP Photo/The Lawton Constitution, Randy Stotler)

In this photo provided by the United States Parachute Association, the U.S. Armys famous Golden Knights parachute team swoops onto the USPA grounds during the 60th anniversary Salute to the Skydiver celebration in Fredericksburg, Va., May 13, 2006. (AP Photo/United States Parachute Association, Mike McGowan)

Spectators view various US Air Force military aircraft, at Schoenfeld airport in Berlin, Germany, Friday, May 19, 2006, during the International Air Show ILA. Friday is the first day the exibition is open to public, and will run until May 21. (AP Photo/Roberto Pfeil)

Firefighters control a fire at the Akron Airdock, Thursday, May 18, 2006, in Akron, Ohio. Fire ripped through the former Goodyear blimp hangar where military research on a prototype surveillance airship was being planned. There were no immediate reports of any injuries in the fire at the airdock which stretches 1,175 feet long or the length of almost four football fields, fire department spokesman Ed Sturkey said. (AP Photo/Akron Beacon Journal, Lindsay Semple)

Palestinian Prime Minister Ismail Haniyeh of the Islamic group Hamas waves to supporters as he leaves a mosque after Friday noon prayers in Gaza City Friday, May 19, 2006. Haniyeh said Friday that he will not dismantle his government's new security force of militants, despite such demands by moderate Palestinian President Mahmoud Abbas. The 3,000-strong army of militants was deployed earlier this week, causing growing friction with Abbas and supporters of his Fatah Party. (AP Photo/Hatem Moussa)

Members of the new security forces of the Hamas-led Palestinian government stand guard outside a mosque where Palestinian Prime Minister Ismail Haniyeh was speaking during Friday noon prayers in Gaza City, Friday, May 19, 2006. Haniyeh said Friday that he will not dismantle his government's new security force of militants, despite such demands by moderate Palestinian President Mahmoud Abbas. The 3,000-strong army of militants was deployed earlier this week, causing growing friction with Abbas and supporters of his Fatah Party. (AP Photo/Hatem Moussa)

Money donated by Palestinian Hamas supporters in an effort to raise money is seen in a bin outside a mosque after Friday noon prayers in Gaza City, Friday, May 19, 2006. Palestinian Prime Minister Ismail Haniyeh from Hamas said Friday that he will not dismantle his government's new security force of militants, despite such demands by moderate Palestinian President Mahmoud Abbas. The 3,000-strong army of militants was deployed earlier this week, causing growing friction with Abbas and supporters of his Fatah Party. (AP Photo/Hatem Moussa)

Palestinian Hamas supporters donate money in an effort to raise cash outside a mosque after Friday noon prayers in Gaza City Friday, May 19, 2006. Palestinian Prime Minister Ismail Haniyeh from Hamas said Friday that he will not dismantle his government's new security force of militants, despite such demands by moderate Palestinian President Mahmoud Abbas. The 3,000-strong army of militants was deployed earlier this week, causing growing friction with Abbas and supporters of his Fatah Party. (AP Photo/Hatem Moussa)

An Egyptian soldier stand guard at the entrance of the International Congress Center hosting the World Economic Forum for the Middle East, at the Red Sea resort of Sharm El-Sheikh, Egypt, Friday, May 19, 2006. The World Economic Forum for the Middle East is taking place during May 20-22.(AP Photo/Hussein Malla)

A Dominican soldier guards the municipal electoral center at the neighborhood of Villa Mella while supporters of the opposition protest the electoral results two days after the country's congressional and municipal elections in Santo Domingo, Dominican Republic, Thursday, May, 18, 2006. President Leonel Fernandez's party remained poised Thursday to make significant gains in Congress in the Dominican Republic's first legislative elections since he took power. With 1.5 million votes from Tuesday's election counted, Fernandez's Dominican Liberation Party appeared to lead in about 60 percent of the races, although elections officials said many were still too close to call. (AP Photo/Ramon Espinosa)

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Two Dominican soldiers guard the Municipal electoral center at the neighborhood of Villa Mella while a child plays on his bicycle two days after the country's congressional and municipal elections in Santo Domingo, Dominican Republic, Thursday, May, 18, 2006. President Leonel Fernandez's party remained poised Thursday to make significant gains in Congress in the Dominican Republic's first legislative elections since he took power. With 1.5 million votes from Tuesday's election counted, Fernandez's Dominican Liberation Party appeared to lead in about 60 percent of the races, although elections officials said many were still too close to call. (AP Photo/Ramon Espinosa)

In this photo dated May 15, 2006, released by the British Army, a soldier of Afghan National Army (ANA) is shown a 50mm calibre machine gun during training by members of the British Operational Mentor and Liaison Team (OMLT). Some 3300 soldiers from across the British Army have been brought in to train their Afghan counterparts in readiness for any future operations. (AP Photo / Cpl Mike Fletcher RLC)

Newport News, Va. (May 17, 2006) - The Pre-Commissioning Unit Texas (SSN 775) sails past the Coast Guard cutter Sea Horse (WPB-87361). The fast-attack submarine returned to the Northrop Grumman Newport News, Va. shipyards after successfully completing alpha sea trials to test the boat's capabilities. Texas is the second Virginia-class submarine, the first major U.S. Navy combatant vessel class designed with the post-Cold War security environment in mind. U.S. Navy photo by Photographer's Mate Airman Apprentice Patrick Gearhiser

The decommissioned aircraft carrier USS Oriskany (CVA 34) sinks in the Gulf of Mexico 24 miles off the coast of Pensacola, Fla., May 17, 2006. The 32,000-ton, 888-foot ship, which took 37 minutes to sink, is the largest ship ever intentionally sunk as an artificial reef. (U.S. Navy photo by Journalist 1st Class Jackey Bratt)