Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Obama Honors US War Dead on Memorial Day VOA News May 30, 2011 People on motorcycles participate in Rolling Thunder, an annual motorcycle rally in Washington DC, to raise awareness of the plight of prisoners of war and soldiers still missing in action during Memorial Day weekend ceremonies. The holiday honors US war Photo: AFP People on motorcycles participate in Rolling Thunder, an annual motorcycle rally in Washington DC, to raise awareness of the plight of prisoners of war and soldiers still missing in action during Memorial Day weekend ceremonies. The holiday honors US war veterans, May 29, 2011 U.S. President Barack Obama, a day after visiting tornado-ravaged Joplin, Missouri, is paying tribute to America's war dead as part of the country's Memorial Day observances. The last Monday in May is set aside to honor those who gave their lives for their country. The president, joined by his wife, is laying a wreath at Arlington National Cemetery, just outside Washington. Across the United States there are parades and ceremonies. In Washington, tens of thousands of motorcyclists are holding their traditional "Rolling Thunder" rally, riding through the nation's capital to call attention to soldiers who have gone missing in action. Memorial Day was also observed in Afghanistan where U.S. troops stationed there paused to remember the more than 1,400 killed in combat since 2001. A memorial service was held Sunday in Joplin, one week after a tornado ripped through the midwestern city, killing more than 140 people, with 44 still missing. President Obama, during his visit, promised that the government will be with the city "every step of the way" as it rebuilds. He called the tornado "a national tragedy." Also on Monday, during a ceremony at the White House, the president is to announce Army General Martin Dempsey as his choice to replace Navy Admiral Mike Mullen as chairman of the Joint Chiefs of Staff. Some information for this report was provided by AP and AFP. .