And a federal law enforcement official told CNN that while investigators have seen nothing yet to indicate the suspects were working with anyone else, a lot of work remains before they can say confidently that no others were involved.

CNN: SHARE THIS

Can you confidently say that everyone you work with is persistently engaged with the latest innovation across departments and management hierarchies?

FORBES: Generation-I: Responsible. Social. Entitled?

Working with an executive coach can help you to be clear on the communication style at your level within the company and to confidently practice this style so you will be heard at work.

FORBES: Is Your Body Language Costing You A Promotion?

The certainty offered by a long-term bill is precisely what America's transportation leaders--like the Champions of Change I met yesterday--need to plan confidently for tomorrow's infrastructure and begin putting our friends and neighbors back to work today.

WHITEHOUSE: Champions of Change Blog