As the war on terror enters its third year, we’ll get an update on its progress from retired U.S. Marine Corps Col. Bill Cowan, and retired U.S. Air Force Lt. Gen. Tom McInerney, FNC military analysts.

Are you taking a gamble by going to Las Vegas for New Year's? The fear is that there are few better terrorist targets than sin city on New Year's Eve. So what is Vegas doing to keep partygoers safe? We’ll ask Las Vegas Mayor Oscar Goodman.

If you’re banking on diet drugs to jumpstart your New Years' slim down, start looking for alternatives. Health and Human Services Secretary Tommy Thompson announces a ban on the herbal supplement ephedra (search). Barbara Michal, whose lost her son to ephedra, says the move can’t come soon enough. But Jeff McCarrell, CEO of Nutrex Research, stands to lose over a quarter of its business as a result of the ban.

Plus, if you are looking to invest in the next big thing, is nanotechnology the answer? We’ll ask Daniel and Mark Ratner, co-authors of the book Nanotechnology and Homeland Security.

And, FedEx (search) is ringing in 2004 with a really big deal. We’ll get the details from FedEx CEO Fred Smith.

We’ll take the market’s temperature with David Nelson, president of DC Nelson Asset Management, and Scott Bleier, president of HybridInvestors.com.

Plus, from planning, to preparing, to preventing: What’s being done to keep the skies safe? Colleen Barrett, president and chief operating officer of Southwest Airlines, joins us on tonight’s edition of Your World with Cavuto.

About Your World...

More than just facts and figures, Your World with Cavuto gets to the heart of the matter with in-depth analysis from our FOX Business News All-Stars:

Terry Keenan, host of Cashin' In
Brenda Buttner, host of Bulls & Bears
David Asman, host of Forbes on Fox