关键词：传感器；导弹防御系统；指挥和控制系统；数据采集
摘 要：In response to changing threats in the region and new opportunities created by advances in missile defense technology, in September 2009 the President announced EPAA, a new policy for ballistic missile defense of Europe. EPAA is designed to rely on increasingly capable missiles, sensors, and command and control systems to defend Europe against threat missiles of various ranges. In its February 2010 Ballistic Missile Defense Review, DOD presented EPAA as part of a broader policy for regional ballistic missile defense, to also include phased adaptive approaches for other regions. MDA is developing and integrating capabilities that will be part of EPAA. U.S. Strategic Command works with the military services and regional combatant commands--such as U.S. European Command for EPAA--to determine whether to accept those capabilities. GAO has issued reports in 2010, 2011, 2012, and 2013 containing assessments of EPAA. The National Defense Authorization Act for Fiscal Year 2013 (NDAA) mandated that the Secretary of Defense submit to the congressional defense committees a report describing the status and progress of regional missile defense programs and efforts, including EPAA. GAO was also required to provide views on DOD's report. GAO assessed (1) the extent to which DOD's report addressed specific topics Congress required and (2) acquisition risks, if any, which could affect the planned delivery of capability for EPAA. GAO compared DOD's report to the NDAA and to information gathered about regional ballistic missile defense efforts, and discussed this and the report methodology with DOD officials. GAO analyzed MDA's acquisition documentation for EPAA, comparing documents issued since 2010 to identify capability delays and risks, and met with MDA and DOD officials to clarify and corroborate that material.