A significant challenge to protecting and enhancing the resilience of the nation's critical infrastructure stems in part from the infrastructure's dispersed, but interconnected, nature and its diverse, private sector ownership. For example, the failure or diminished operating capacity of the electrical grid on one region may threaten the continued operation of the nation's telecommunications network, The failure of a water distribution system may impact a number of operations that rely on water service. These affected operations could include hospitals, manufacturing facilities as well as routine home life activities. Interruptions in the transportation system would generate repercussions in commercial activities. Because the infrastructure is held by thousands of owners, most of whom are in the private sector, the challenge to protect these systems is intensified by the need for collaboration and cooperation.