At the U.S. Capitol, "there have been increased foot patrols, exterior building checks and the strategic placement of personnel, all cautionary while the intelligence community measures the possibility of anti-American response, " Senate Sergeant at Arms Terry Gainer said via e-mail.

CNN: U.S. anticipates al Qaeda 'threats of retaliation'

Their startup, called BrassRing, would go after the job-recruiting market by hosting career fairs, running Internet job boards and developing software for corporate personnel departments and university career-placement offices.

FORBES: Help Wanted. Please!