The two men appear to have been on the American Airlines Flight 77, the plane that crashed into the Pentagon, sources told TIME.

资料显示，这两人登上了美国航空公司77航班并撞上了五角大楼。

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Thomas Heidenberger stopped recently with his son, Tom, to pay tribute to his wife, Michelle, a senior flight attendant on Flight 77.

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The death toll in Pennsylvania is 44, and 189 at the Pentagon, including the 64 people who died on American Airlines Flight 77.

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The Bushes will then travel to the Pentagon for an observance, remembering the lives lost when American Airlines Flight 77 slammed into the building.

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