In his weekly radio and Internet address, Obama is asking people to remember the victims and their families, and to honor the first-responders who risked their lives to help. 

Obama says America has come back stronger and al-Qaida is on the path to defeat. 

In the Republican address, Sen. John Barrasso of Wyoming criticized Obama's presidency and said the nation isn't better off than it was four years ago under President George W. Bush.

Watch the address below:

(Copyright 2012 by The Associated Press. All Rights Reserved.)