Kathleen Troia "K.T." McFarland is a Fox News National Security Analyst and host of FoxNews.com's "DefCon 3." She served in national security posts in the Nixon, Ford and Reagan administrations. She was an aide to Dr. Henry Kissinger at the White House, and in 1984 Ms. McFarland wrote Secretary of Defense Weinberger's groundbreaking "Principles of War " speech. She received the Defense Department's highest civilian award for her work in the Reagan administration.