SHANKSVILLE, Pa. -- It was 10:06 a.m., Sept. 11, 2001, when United Airlines Flight 93 crashed in Somerset County, Pa. The United Airlines flight crashed in Somerset County, killing 40 passengers and crew members aboard. Also, four terrorists died in the crash.

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March 11, 2002: Shanksville Remembrance

Authorities believe the plane was headed toward a target in Washington, D.C., when some passengers overpowered the hijackers and forced the plane down in a field near Shanksville, about 80 miles southeast of Pittsburgh.

At 10:06 a.m. Monday, March 11, 2002, the Shanksville United Methodist Church's bells tolled 40 times -- once for each victim -- while their names were read. After the service, approximately 300 people went to the site of the crash, where family members of the victims laid flowers next to a bronzed plaque imbedded in stone.

The plaque read: "This memorial is in memory of the brave men and women who gave their lives to save so many others. Their courage and love of our country will be a source of strength and comfort to our great nation."

A flag from the U.S.S. Carl Vinson was then unfurled.

Three other planes hijacked that morning were crashed into the Pentagon and the World Trade Center. Flight 93 was the only one of four hijacked planes that didn't kill anyone on the ground.

Click here to review the Somerset plane crash site in pictures.

A member of Congress and local officials announced last week that they plan to seek a federally sponsored memorial at the site. Rep. John Murtha, D-Pa., said he will ask Congress to designate a national memorial at the site of the crash of United Airlines Flight 93.

"The passengers on Flight 93 redefined the war on terrorism," Murtha said. "This will honor their memory."

Under the proposed legislation, the Secretary of the Interior would name a 15-member panel -- including members of the victims' families -- to evaluate and decide on designs for the memorial, which will be paid for by public and private funds.

So far, businesses and individuals have contributed about $1 million toward a memorial, said Susan Hankinson, Somerset County coordinator of the memorial effort. A task force will soon be established to work on projects honoring the victims of the crash, she said.

Murtha had no estimate of the total cost of the memorial or a projected completion date.