"Washington, DC - September 16, 2001 -- United States President George W. Bush returns from a week-end at Camp David on Sunday, September 16, 2001.  In remarks to the press as walked to the White House,  President Bush warned ""We need to be alert to the fact that these evil-doers still exist""  and urged Americans to not let terrorism distract them from their normal routines..Credit: Ron Sachs / CNP"