The nation's air, land, and marine transportation systems are designed for accessibility and efficiency, two characteristics that make them vulnerable to attack. The focus of chapter 1 is how best to implement and finance a system of deterrence, protection, and response that effectively reduces the possibility and consequences of terrorist attacks without unduly interfering with travel, commerce, and civil liberties. Almost every conversation about surface transportation finance begins with a two-part question: What are the "needs" of the national transportation system, and how does the...