Fireworks explode over the Washington Monument in Washington, D.C., Friday, July 4, 2008. (Tom Ramstack / The Washington Times )

Parade goers wave flagsd during the Independence Day parade July 4, 2008 in Wimberley, Texas. (Photo by Ben Sklar/Getty Images)

Fireworks explode in front of the Brandenburg Gate's quadriga during a ceremony to inaugurate the new US embassy building in Berlin on July 4, 2008. ( JOHN MACDOUGALL/AFP/Getty Images)

U.S. Marines, from the 24th Marine Expeditionary Unit, decorate their tents to celebrate the Fourth of July at a forward operating base in southern Afghanistan, Friday, July 4, 2008. The U.S. Defense Department has extended the combat tour of 2,200 Marines in Afghanistan after insisting for months the unit would come home on time. (AP Photo/Rafiq Maqbool)

U.S. Marines, from the 24th Marine Expeditionary Unit, play flag football at a forward operating base in southern Afghanistan, Friday, July 4, 2008. (AP Photo/Rafiq Maqbool)

U.S. military service members salute at a mass re-enlistment ceremony in Baghdad, Iraq, Friday, July 4, 2008. 1215 service members re-enlisted Friday during an Independence Day ceremony at al-Faw palace at Camp Victory. (AP Photo/Marko Drobnjakovic)

US soldiers from various branches of the military stand at attention during a mass reenlistment ceremony at the Al-Faw Palace, one of former Iraqi president Saddam Hussein's main palaces, in Baghdad on July 4, 2008. More than 1,200 US service members took a reenlisment oath on the 4th of July, the anniversary of US independence, led by top commander in Iraq General David Petraeus. (ALI AL-SAADI/AFP/Getty Images)

Keith Wasser, right, takes a cell phone photo of friends from the California Historical Group in period military uniforms before the annual Fourth of July parade in Huntington Beach, Calif., Friday, July 4, 2008. (AP Photo/Mark Avery)

A resident watches during the Independence Day parade July 4, 2008 in Wimberley, Texas. (Photo by Ben Sklar/Getty Images)

Parade participants make their way through town during the Independence Day parade July 4, 2008 in Wimberley, Texas. (Photo by Ben Sklar/Getty Images)

Trick roper Felix Lopez of Bakersfield, Calif., lassos a boy during the 104th 4th of July Parade in Huntington Beach, Calif. on Friday, July 4, 2008. (AP Photo/The Orange County Register, Ana Venegas)

Joe Crandall of Groveland, Ill., is decked out in red, white and blue during Thursday's Fourth of July celebration at Glen Oak Park in Peoria, Ill., July 3, 2008. (AP Photo/Peoria Journal Star, Ron Johnson)

Hannah Wernher holds the 13-star, American flag, as the Mountain Fife & Drums from lake Arrowhead, Calif., warm up in the fog before the annual Fourth of July parade in Huntington Beach, Calif., Friday, July 4, 2008. (AP Photo/Mark Avery)

Members of a Bahamian Junkanoo band participant in the Key Biscayne, Fla., July 4th parade Friday, July 4, 2008 in Key Biscayne. (AP Photo/Wilfredo Lee)

Benjamin Landry enjoys a slice of watermelon at the conclusion of the Fourth of July Children's Parade in Triangle Park, Monroe, La., on Friday, July 4, 2008. More than 1,500 participants were attracted to the annual event. (AP Photo/The News-Star, Margaret Croft)

Jessalynn Chamberlain sits with Stalla, a bassett hound, while riding in a truck which was pulling the Lycoming County Fair float in Millville's Fourth of July Parade Friday, July 4, 2008 in Millville, Pa. (AP Photo/Bloomsburg Press Enterprise, Jimmy May)

Angelica Ramirez, left, 11, Adrian Ramirez, center, 3, and Armando Ramirez, 6, of the Flor de Mexico Dance Group celebrate during the Independence Day parade in Fremont, Calif., on Friday, July 4, 2008. The large parade drew thousands of people to the city for Independence Day. (AP Photo/The Contra Costa Times, Mike Lucia)

A New York Fire Department boat sprays red, white and blue water in the East River in advance of the 32nd annual Macy's Fourth of July fireworks display, Friday, July 4, 2008 in New York. Organizers said this year's show includes new nautical fireworks that float on the water. Other new shells will go through multiple transformations after they launch, providing four different effects. (AP Photo/Mary Altaffer)

The Underdog balloon sits ready on the National Mall with the Washington Monument in the distance for the start of the national Independence Day parade on July 4, 2008 in Washington, DC. The parade consists of invited bands, fife and drum corps, floats, military and specialty units, giant balloons, equestrian, drill teams, VIP's, national dignitaries, and celebrity participants, to draw the attention of Americans to the real meaning for the holiday. (TIM SLOAN/AFP/Getty Images)

Canadian tourists have their photo taken on the US Marine Corps float before the start of the national Independence DaypParade on July 4, 2008 in Washington, DC. The parade consists of invited bands, fife and drum corps, floats, military and specialty units, giant balloons, equestrian, drill teams, VIP's, national dignitaries, and celebrity participants, and is a major national event which seeks to draw the attention of Americans to the real meaning for the holiday. (TIM SLOAN/AFP/Getty Images)

Takeru Kobayashi, of Japan, left, and Joey Chestnut battle to eat the most hot dogs in under ten minutes in the annual hot dog eating contest, Friday July 4, 2008, in the Brooklyn borough of New York. Joey Chestnut reclaimed the top spot at the annual hot dog eating contest in Coney Island on Friday after first tying with archrival Takeru Kobayashi with 59 hot dogs in a 10-minute chow-down and then beating him in a five-dog eat-off. (AP Photo/Ed Ou)

Joey Chestnut is declared the winner of the annual hot dog eating contest, Friday July 4, 2008, in the Brooklyn borough of New York. Joey Chestnut reclaimed the top spot at the annual hot dog eating contest in Coney Island on Friday after first tying with archrival Takeru Kobayashi with 59 hot dogs in a 10-minute chow-down and then beating him in a five-dog eat-off. (AP Photo/Ed Ou)

Democratic presidential candidate, Sen. Barack Obama, second from right, and his wife Michelle, left, watch a Fourth of July parade with their two daughters, Malia, right, and Sasha in Butte, Mont., Friday, July 4, 2008. (AP Photo/Jae C. Hong)

Julia Freeman, 7, left, takes the oath of citizenship along with other new U.S. citizens during the 46th annual Independence Day celebration and naturalization ceremony at Monticello, the historic home of Thomas Jefferson, in Charlottesville, Va., Friday, July 4, 2008. (AP Photo/Steve Helber)

US President George W. Bush holds newly naturalized United States citizen, Julie White Freeman, during an Independence Day naturalization ceremony at Monticello, the home of Thomas Jefferson, July 4, 2008 in Charlottesville, Virginia.US President George W. Bush participated in a ceremony where 72 foreign nationals were sworn-in as American citizens. (Photo by Kevin Dietsch-Pool/Getty Images)

Fireworks explode over the Manhattan skyline during the 32nd annual Macy's Fourth of July fireworks display, Friday, July 4, 2008 in New York. Some 30,000 shells were set off more than 1,000 per minute. Organizers said this year's show included new nautical fireworks that float on the water. (AP Photo/Mary Altaffer)

Eliot and Daniel Bernier watch the Fourth of July fireworks from the rooftop of the Canadian Embassy in Washington, D.C., July 4, 2008. (John Tully/The Washington Times)

Fireworks light up the sky over the National Mall during Independence Day, Friday, July 4, 2008 in Washington (AP Photo/Luis M. Alvarez)