to the 40 men and women on board flight 93 who died in an attempt to bring the plane down rather than letting it hit a target presumed to be somewhere in washington, d.c. the president also paying tribute to the nearly 7,000 service members he said have died facing down the menace of radical islamic terrorism. as commander-in-chief, the president said i will always do everything in my power to prevent terrorists from striking american soil. according to terrorism experts i talked with today, a u.s. intelligence as well as our allies have done a very good job in trying to hunt down and prevent any large scale terrorist attacks like 9/11 from happening again. neil, these lone wolf attacks like we saw there in new york last year where the guy in the truck mowed down a total of 19 people, killing 8 of them on the greenway there in western manhattan, very much more difficult to try to prevent those from happening. but they are doing their best. neil? >> that's all they can do. all right, thank you my friend, john roberts. >> thank you. >> a moment of silence corner of wall and broad new