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SHANKSVILLE, Pa. (AP) – The National Park Service has restored a family cemetery that just happens to lie within the Flight 93 National Memorial, which honors those killed on the hijacked airliner that crashed in western Pennsylvania during the Sept. 11, 2001 terrorist attacks.

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The cemetery belongs to the Sorber family, who buried relatives there from 1856 to 1892.

The park service says it has straightened headstones, landscaped and cleaned up the small cemetery, and fenced it in. The park service will offer tours of the fixed up cemetery on Tuesday.

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Forty passengers and crew members died when United Airlines Flight 93 crashed after it was hijacked by four Muslim terrorists. The San Francisco-bound flight originated in Newark, New Jersey.

An investigation concluded the plane crashed when passengers and crew revolted against the hijackers.

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