Soldiers who re-enlist, returning for tours of duty in Iraq, often cite patriotism, duty, and the need to protect their homeland from terrorism when asked why they've re-upped. They also describe being part of a "committed brotherhood to defend the constitution and the people who cannot defend themselves." Producer Eric Whitney of member station KRCC offers a sound montage from a visit to a re-enlistment ceremony at Ft. Carson, Colo., in early May.