U.S. Army Sgt. Brian Scott touches the grave marker of his friend and gunner Army Specialist Michael Luis Gonzales on Memorial Day in Section 60 of Arlington National Cemetery on Monday in Arlington, Virginia. Gonzales was killed August 28, 2008, in Iraq by a roadside bomb that severly injured Scott. This is the 142nd Memorial Day observance at the cemetery. (Photo by Chip Somodevilla/Getty Images)

Alvin Amezquite and his wife Erika Amezquita of New York City embrace at the grave of their friend U.S. Army Staff Sgt. Christian Philip Engeldrum on Memorial Day in Section 60 of Arlington National Cemetery on Monday in Arlington, Virginia. Amezquite and Engeldrum served together in the National Guard and were friends for more than 12 years. (Photo by Chip Somodevilla/Getty Images)

Visitors to the Tomb of the Unknowns watch during the changing of the guard at Arlington National Cemetery, on Memorial Day in Arlington, Virginia. (AP Photo/Charles Dharapak)

U.S. soldiers pray during a Memorial Day ceremony at Camp Victory in Baghdad, Iraq on Monday. Memorial Day commemorates U.S. men and women who died while in the military service. (AP Photo/Khalid Mohammed)

The casket carrying the cremated remains of a veteran is saluted during a ceremony before the traditional Memorial Day parade on Monday, in Dearborn, Mich. The unclaimed remains of veterans, who served in the armed forces during the Korean conflict, World Wars I and II, and Vietnam, were carried in caskets and honored before they were taken to the Great Lakes National Cemetery in Holly. (AP Photo/The Detroit News, David Coates)

People brave a driving rain storm after President Barack Obama encouraged them to go to their cars for safety during Memorial Day ceremonies at the Abraham Lincoln National Cemetery in Elwood, Ill. on Monday. (AP Photo/Charles Rex Arbogast)

Zoe Clear, age 10, stands with her Jersey cow ahead of judging during the Surrey County Show 2010 at Stoke Park on Thursday in Guildford, Surrey, England. The annual Surrey County Show is the biggest one day agricultural show in the UK attracting up to 40,00 people. (Photo by Dan Kitwood/Getty Images)

A demonstrator dressed up as the Goddess of Democracy stands outside a downtown shopping mall on Monday, in Hong Kong. Police have seized a second statue dedicated to victims of the 1989 Tiananmen Square crackdown, in what critics called an attack on freedom of expression in this semiautonomous Chinese territory. The Chinese military"s suppression of pro-democracy student protests in June 1989, which killed hundreds, is off-limits on the mainland, but it is openly mourned and criticized in Hong Kong, a former British colony that is guaranteed Western-style civil liberties. (AP Photo/Vincent Yu)

Members of the Patrouille Suisse, part of Switzerland"s air force, perform in Crans-Montana, Switzerland on Monday. (AP Photo/Keystone/Dominic Favre)

An Egyptian protestor shouts anti-Israeli slogans in front of a Palestinian flag during a rally in Cairo, Egypt on Monday, after Israeli commandos boarded six ships carrying pro-Palestinian activists and humanitarian to the blockaded Gaza Strip. (AP Photo/Amr Nabil)

Supporters of the Islamic group Jamaat-e-Islamic chant slogans during a rally to condemn Israel"s military assault on a convoy of humanitarian aid ships traveling to Gaza on Monday, in Islamabad, Pakistan. (AP Photo/Vincent Thian)

A woman carries water bottles inside a camp for earthquake displaced people after a rain in Port-au-Prince. A hurricane season predicted to be one of the wettest on record opens officially on June 1st in the Caribbean, where hundreds of thousands of Haitian earthquake victims have only tarps or fraying tents to protect them in a major storm.(AP Photo/Esteban Felix)

Indian National Defense Academy (NDA) cadets celebrate at the passing out parade at Khadakwasla in Pune, India on Monday. NDA is a joint services academy where cadets of Army, Navy and Air Force are trained together before they go for their pre-commission training to their respective academies. (AP Photo)

A supply vessel passes through an oil sheen near the site of the Deepwater Horizon oil spill in the Gulf of Mexico near the coast of Louisiana on Monday. (AP Photo/Jae C. Hong)

A supply vessel passes through oil floating near the site of the Deepwater Horizon oil spill in the Gulf of Mexico near the coast of Louisiana on Monday. (AP Photo/Jae C. Hong)

Indian laborers nap during a lunch break at a workshop in Mumbai, India on Monday. (AP Photo/Rafiq Maqbool)