A security guard patrols the perimeter around a sand sculpture depicting U.S. Republican presidential candidates outside the location of the Republican debate in Myrtle Beach, South Carolina January 10, 2008. They are (L-R) former U.S. Senator Fred Thompson (R-TN), former Massachusetts Governor Mitt Romney, former New York City Mayor Rudy Giuliani, former Arkansas Governor Mike Huckabee, and U.S. Senator John McCain (R-AZ). REUTERS/Jim Young (UNITED STATES) US PRESIDENTIAL ELECTION CAMAPIGN 2008