"<p>Motorcyclists pass Marine Staff Sgt. Tim Chambers, Ret., and Christian Jacobs, 6, of Hertford, N.C., as they salute during the 30th anniversary of the Rolling Thunder ""Ride for Freedom"" demonstration in Washington, Sunday, May 28, 2017. Jacobs father, Marine Sgt. Christopher Jacobs, was killed while serving in 2011. Rolling Thunder seeks to bring full accountability for all U.S. prisoners of war and missing in action soldiers. (Photo: Cliff Owen/AP) </p>"
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