site, to the pentagon, to shanksville, pennsylvania, americans today, paying tribute to the victims of the september 11 terror attacks. we spoke with senator john mccain about his memories of 9/11 and the national security matters our nation still faces. >> greta: senator, nice to see you, sir. >> thank you, greta. >> greta: today, a very solemn day for america and actually for people around the world. where were you on 9/11? >> right here. right here where we are speaking. i saw it there. and then, of course... signal for us to evacuate the building took place. to this day, we will never know where the plane that crashed in pennsylvania was headed. and then everybody evacuated and we stood for a long time, outside of the capitol here, on the grounds here. and then, fortunately, there was a staffer of mine who had a apartment a couple of blocks away and we went there and spent time there until i could get to my residence.