U.S. President Barack Obama lays a wreath at the Tomb of the Unknowns in Arlington, Virginia, on Monday, May 30.
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Christian Jacobs, a 5-year-old from Hertford, North Carolina, stands next to his father's gravestone at Arlington National Cemetery on May 30. Marine Sgt. Christopher James Jacobs died in a training accident in 2011.
Former music teacher Jim Doepke plays taps at the conclusion of a Memorial Day ceremony in Key West, Florida.
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Daviess County Sheriff Keith Cain leads a prayer May 30 at the Charles Shelton Memorial in Owensboro, Kentucky.
A child greets motorcyclists during Rolling Thunder's annual "Ride for Freedom" parade in Washington on Sunday, May 29. The biker rally is a tradition on Memorial Day weekend, paying tribute to prisoners of war and Americans missing in action.
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Retired Marine Staff Sgt. Tim Chambers and his new wife, Lorraine, salute riders during the Rolling Thunder event.
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Veterans and other community members help clean up a veterans memorial in Venice Beach, California, on May 29. The mural had been covered with graffiti.
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A Boy Scout runs past gravestones after volunteers placed American flags at the Los Angeles National Cemetery on Saturday, May 28.
People hold up the world's largest American flag during the Chicago Memorial Day Parade on May 28. The 5,000-square-foot flag is nearly 100 years old.
Service members present the colors May 28 during the Carteret County Memorial Day Service in Beaufort, North Carolina.
Volunteer Robert Sherman tends to the "garden" of 37,000 American flags planted on Boston Common for Memorial Day weekend. Each flag represents a Massachusetts resident killed in combat.
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Thousands of flags were placed on veterans' graves at Brig. Gen. William C. Doyle Memorial Cemetery in Wrightstown, New Jersey, on Friday, May 27.
A man stands in front of a large American flag set up on the National Mall in Washington on May 27.
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Joe Bean, vice president of Rolling Thunder, carries a torch near the Vietnam Veterans Memorial in Washington on May 27.