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The Blue and the Gray are meeting again at Gettysburg.
Re-enactors fired the opening volley from their muskets to begin the commemoration of the 150th anniversary of the pivotal Civil War battle.
About 200,000 people are expected to visit over the next 10 days.
The National Park Service’s official ceremonies begin Sunday.
The actual anniversary is July 1 through July 3, 1863.
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