MSNBC American Voices With Alicia Menendez September 11, 2021 22:32:00
>> reporter: passengers stormed the cockpit led by todd's cry let's roll. the plane crashed in pennsylvania just 20 minutes flying time from washington, d.c. the intended target. >> i think it made everybody aware that defense of the country is not just for those in uniform. everybody has to play a role in securing the nation. >> reporter: the nation defended against organized terror attacks with screening common place at airports and public events that draw big crowds but the government is now struggling to counter new threats. example -- more than a decade after drones went mainstream with o...
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