With the busiest travel season kicking off in just a few days, more than 23 million passengers are expected at our nation's airports.  To make travel a little less hectic for passengers, the TSA is showcasing some major changes to airline security.

FOX's Chief Intelligence Correspondent Catherine Herridge has more in our ongoing series on national security:

Securing America:

TSA Officials say Thanksgiving is the busiest 10-day travel period of the year, and it's a good time to put some of their new security changes to the test.

TSA Administrator John Pistole:

Pistole: "This is all about risk mitigation,risk management."

More than half of the nation's airports are now using body scanners with new software that replaces the detailed outline of the body with a generic image, after complaints that the scans were an undue invasion of personal privacy.

At Reagan National Airport, Catherine Herridge, FOX News Radio.