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To view this page ensure that Adobe Flash Player version 9.0.124 or greater is installed. Despite these intensified efforts to protect major metropolitan areas and critical sites from aerial attacks, it has been reported that military officials have concluded that stopping a 9/11-style attack would be difficult unless fighter jets were already airborne.95 Maintaining a constant airborne defense presence, however, would be extremely costly and resource intensive. Ground-to-air missiles have been deployed around Washington, DC, but are largely seen as a measure of last resort for protecting a limited number of key locations against an aerial attack, whether that attack involves a GA aircraft or a commercial airliner.96 Because of the continuing challenges in providing effective national airspace defenses, the adequacy of airspace protection initiatives will likely depend on close cooperation and coordination between the FAA, the DHS, and the DoD as well as effective command and control within each of these organizations. Presently, event response is coordinated through the FAA’s Domestic Events Network (DEN), a continuously operated unclassified network for sharing critical incident information regarding aircraft deviations and violations of security restricted airspace, and the TSA’s Transportation Security Operations Center (TSOC), the central hub for exchanging information regarding aviation threats located in Herndon, VA. The function of these facilities is to provide a shared situational awareness of aviation threats including, but not limited to, threats posed by GA aircraft. Besides the TSA, NORAD, and the FAA, other key agencies involved in airspace surveillance and protection include Customs and Border Protection (CBP) and the Coast Guard which provide air interdiction and situation response within the DHS as well as the Federal Bureau of Investigation (FBI).97 These agencies also coordinate with federal, state, and local law enforcement to integrate threat response. Coordinated threat response was observed in the May 11, 2005 event where an errant small private airplane penetrated deep into the FRZ around Washington, DC. The coordinated response to this threat included deployment of fighter jets, helicopters from CBP, and federal and state law enforcement assets to interdict and intercept the aircraft. While the response to this perceived threat was by most accounts well coordinated, concerns have been raised that response to a more formidable threat, such as a faster moving aircraft attempting to evade airspace protections and defenses may be much more difficult to interdict and may require a carefully orchestrated response involving close coordination between responsible agencies. While these agencies continue to assess and refine their monitoring and 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：Securing General Aviation 通用航空安保(54) |
