Tune in for a special thirty minute Exchange as President Bush's choice to succeed Donald Rumsfeld as Defense Secretary goes before the Senate Armed Services Committee for confirmation hearings. We'll preview what may happen there, the questions Gates will face and the challenges he'll confront if confirmed. Laura's guest is Bill Martel, Associate Professor of International Security Studies in the Fletcher School at Tufts University and author of "Victory at War: Foundations of Modern Military Policy." At 9:30 am, NHPR will go to live, anchored coverage of the confirmation hearings, hosted by Talk of the Nation's Neal Conan and NPR National Security Correspondent Mary Louise Kelly.