Longtime CBS News national security correspondent David Martin arrived at the Pentagon on Sept. 11, 2001, around 10 minutes after a plane crashed into the building. Martin joins to reflect on that day 25 years later.

Longtime CBS News national security correspondent David Martin arrived at the Pentagon on Sept. 11, 2001, around 10 minutes after a plane crashed into the building. Martin joins to reflect on that day 25 years later.
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