The first-ever Quadrennial Homeland Security Review (QHSR) comes amid much expectation and interest. Homeland security encompasses the most sweeping reform in government in nearly half a century, and makes explicit the realization that the evolving international security landscape bears directly on our domestic security. But we have also learned that security is not an end in itself; rather, it is an important means to a vital end: preserving the values, principles, and way of life we pursue as Americans.