the national cathedral's program concludes with international opera star, denise graves, singing "amazingost but now i'm found, was blind but now i see ♪ ♪ 'twas grace that taught my heart to fear and grace my fears relieved ♪ ♪ how precious did that grace appear, the hour i first believed ♪ ♪ through many dangers, toils and snares, i have already come ♪ ♪ 'tis grace that brought me safe thus far and grace will lead me home ♪ ♪ amazing grace, how sweet the sound that saved a wretch like me ♪ ♪ i once was lost, but now i'm found, was blind, but now i see ♪ ♪ ♪ [applause] >> thank you for being part of a call for compassion. good night. [captions performed by national captioning institute] [captions copyright national cable satellite corp. 2011] >> a look -- a look back at today's 9/11 ceremony. later, the service at the newly dedicated national moral for flight 93. you can see any of send a's event and their entirety online anytime at c-span.org. the 9/11 commemorations began this morning and at new york city. next, and he will health -- you will hear family members agreed those who died t

denise graves is one of those who sang at the concert. mr.obama said history will show the nation survived a painful blow in the 9/11 attack but kept the faith and emerged stronger. >> these past ten years have shown that america does not give in to fear. to rescue workers who rushed to the scene, the firefighters who charged up the stairs. the passengers who stormed the cockpit, these patriots defined the very nature of courage. >> the president noted that 2 million americans have gone to war since the september 1 attack. he says the strength of the country lies in the country wanting to move on from a country at war to a country of peace. >>> and the president and first lady traveled to shanksville, pennsylvania. they placed a wreath where a plane went down. the flight was headed from newark to san francisco. family members announced the names of the loved ones lost including seven people from right here in the bay area. a former cal rugby player is among those credited from stopping the plane from slamming into either the white house o

that's denise graves performing "amazing grace."resident obama was onhand for the concert after attending events in new york and pennsylvania. during a speech, the president praised america's resilience. >> we can never get back the lives that were lost on that day or the americans who made the ultimate sacrifice in the wars that followed. and yet, today, it is worth remembering what has not changed. our character as a nation has not changed. >> the washington national cathedral put on the concert. the event featured video of rescuers on 9/11 and survivors thanking first responders for all that they did. >>> 7:17. threatening messages referring to another september 11th attack were posted briefly on the white house facebook page before being taken down. three of the messages said "we'll come back." one had a photo of osama bin laden. the secret service is investigating. >>> also, a new study washes that the u.s -- warns that the u.s. needs to develop more sophisticated cyber intelligence that can predict computer-related thefts and