A custom painted Harley Davidson sits along the Rolling Thunder parade route in Washington , D . C . , USA , 25 May 2008 . Rolling Thunder is held every Memorial Day weekend , an honours to fallen US service members as well as prisoners of war and the missing in action from previous wars . EPA / SHAWN THEW < 저작권자 ⓒ 2007 연 합 뉴 스 . 무단 전재 - 재 배포 금지 . >< 연합뉴스 긴급 속보 를 SMS 로 ! SKT 사용 자 는 무료 체험 ! >