The Nation's critical infrastructure includes hundreds of thousands of interconnected computers, servers, routers, switches, and fiber optic cables known as cyberspace. The National Strategy to Secure Cyberspace outlines the United States' national strategy to combat the increasing vulnerability of cyber attacks. The strategic objectives run consistent with the National Strategy for Homeland Security: to prevent cyber attacks against America's critical infrastructures; to reduce national vulnerability to cyber attacks; and to minimize damage and recovery time from cyber attacks that do occur. The National Strategy to Secure Cyberspace explains the five national priorities for cyberspace security: (1) a national cyberspace security response system; (2) a national cyberspace security threat and vulnerability reduction program; (3) a national cyberspace security awareness and training program; (4) Securing governments' cyberspace; and (5) national security and international cyberspace security cooperation. Moreover, the stated purpose of this document is "to engage and empower Americans to secure the portions of cyberspace that they own, operate, control, or with which they interact."