Deborah Lee James, 23rd Secretary of the U.S. Air Force, explains the differences between operational security and network security, and why it's important to have both in the U.S. military.

Megan Eckstein, deputy editor of USNI News, joins the Pentagon Beat this week to discuss the Navy’s plan to construct and maintain a 355-ship fleet, and why at least one member of the House Armed Services Committee is skeptical of this idea.

Edward Marks and Michael Kraft, former advisers on terrorism to the U.S. government, discuss the United States' long and storied history with counterterrorism operations.