Broken branches and household debris are scattered across a lawn early morning, Feb. 29, 2012, in Harveyville, Kan., after an apparent tornado passed through the town Tuesday night. Kansas Gov. Sam Brownback declared a state of emergency late Tuesday after a powerful storm system pounded the state's midsection. (Matthew Fowler/Emporia Gazette/AP Photo)

Republican presidential candidate former Massachusetts Gov. Mitt Romney arrives with his wife Ann at his election watch party after winning the Michigan primary in Novi, Mich., Feb. 28, 2012. (Gerald Herbert/AP Photo)

A demonstrator uses a burning doll to light his cigarette in front of the stock exchange in Barcelona, during a student's demonstration against austerity measures in education, Feb. 29, 2012. Students across Spain staged sit-ins and noisy demonstrations over spending cuts, labor market reforms and recent police violence against protesters. (Lluis Gene/AFP/Getty Images)

A riderless horse leads a caisson carrying the remains of Army Brig. Gen. Terence J. Hildner during a burial services at Arlington National Cemetery in Arlington, Va. February 29, 2012. Hildner died of apparent natural causes Feb. 3 in Kabul, Afghanistan. Hildner, 49, took command of 13th Sustainment Command (Expeditionary) Aug. 19, 2010. (Manuel Balce Ceneta/AP Photo)

Feliciano Lopez of Spain reacts after losing a point against Roger Federer of Switzerland during the Emirates Dubai ATP Tennis Championships in Dubai, United Arab Emirates, Feb. 29, 2012. (Hassan Ammar/AP Photo)

Queen Elizabeth II opens the refurbished East Wing of Somerset House in London, Feb. 29, 2011. (Eddie Mulholland/WPA Pool/Getty Images)

An Indian child sits on metal rods outside her home in a slum area in Mumbai, India, Feb. 29, 2012. Millions of children are growing up in squalid urban areas and denied basic services despite living close to them according to the United Nations Children's Fund. UNICEF said children living in slums and shantytowns often lack water, electricity and health care. (Rajanish Kakade/AP Photo)

A South Korean man hangs a national flag on a tree to celebrate March First Independence Movement Day, the anniversary of the 1919 uprising against Japanese colonial rule, in Seoul, South Korea, Feb. 29, 2012. (Ahn Young-joon/AP Photo)