Bikers descended upon D.C. Sunday for their annual Memorial Day tribute to fallen troops.
The Rolling Thunder motorcycle ride began at the Pentagon parking lot in Arlington, Va., late Sunday morning. The route took bikers across Memorial Bridge into northwest Washington to the Vietnam Veterans Memorial.
Several streets along the route were closed until about 4 p.m.
Participants paid respect to fallen troops and remembered prisoners of war and those missing in action. Ride organizers said the event is a demonstration -- not a parade -- to ask for a full accounting of the rights of all POWs, MIAs and veterans.