Again, as I said a minute ago, we have been tracking streams and threats for quite some time.

WHITEHOUSE: Press Briefing

Both radar systems were developed and built by Raytheon, providing high-resolution tracking and discrimination of all ballistic threats.

FORBES: Can U.S. Defenses Cope With North Korea's Missiles?

Getting to see what people say and think in real time thanks to public discussions on social networks and websites opens up all kinds of exciting possibilities, from tracking the spread of diseases to assessing security threats.

FORBES: Connect

In Washington, Louise Gresham, director of health security and epidemiology at the Nuclear Threat Initiative -- which also works to reduce global biological threats -- looks at a report tracking the spread of H1N1 in the Middle East.

CNN: Gearing up for prevention: The Hajj meets H1N1