The National Park Service has acquired about 950 acres of land for the Flight 93 National Memorial in southwestern Pennsylvania.
Friday's announcement said it's the park service's largest single acquisition of private land for the memorial about 65 miles southeast of Pittsburgh.
The land does not include the 500 acres of private land the government is trying to acquire for the memorial through eminent domain.
The government plans a $58 million, 2,200-acre permanent memorial and national park at the crash site.
The crash of United Flight 93 on Sept. 11, 2001, killed 40 passengers and crew and four terrorist hijackers. The 9/11 Commission report said the hijackers crashed the plane as passengers tried to wrest control of the cockpit.
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