U.S. President George W. Bush shakes hands with Artie Muller, President of Rolling Thunder, Inc. at the White House in Washington, D.C., May 30, 2004. Nancy Sinatra is seated behind Muller. Rolling Thunder, whose major function is to educate the public about prisoner of war and missing in action issues, of Americans from all past wars. Every year thousands of supporters of Rolling Thunder participapte in the annual ride for freedom. REUTERS/Mannie Garcia MG