>> trace: nearly a decade after the 9/11 attacks we have new video showing the fate of flight 93. it shows a cloud of grey smoke in the sky this is just minutes after the united airlines plane crashed in western pennsylvania. it is said to be the earliest video of that crash. the flight's passengers fought the plane's hijackers who were told we are trying to reach washington, d.c.. 40 passengers and crewmembers died. fox news channel is reporting on how defending our nation as changed over the past decade. we'll have a live report later this hour. word today that the white house plans to greatly reduce the number of american troops in iraq. sources tell a fox news the administration wants to withdraw all but 3,000 service members by the end of the year down from 45,000 there. defense secretary panetta is backing that plan.