Rolling Thunder is an annual motorcycle rally that is held in Washington, DC during the Memorial Day weekend to call for the government's recognition and protection of Prisoners of War (POWs) and those Missing in Action (MIAs). The tribute to American war heroes started out in 1988 with 2,500 participants. Now approximately 900,000 participants and spectators are involved with this annual demonstration in Washington, DC. Rolling Thunder celebrates its 25th anniversary this year.

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