“9·11”恐怖袭击事件后,美国首脑指挥防护工程体系首次全面启用,关键时刻担负了保卫总统、副总统及政府要员的重任,并通过工程体系内部的先进指挥控制设备、设施,有效实施了一系列的重大决策和全球战略指挥控制。美国首脑指挥防护工程体系主要由夏延山地下指挥中心,美国国家 After the Sept. 11 terrorist attacks, the U.S. head commanders protected the engineering system for the first time in full swing. At the crucial moment, it assumed the important task of defending the president, vice presidents and government officials. They also controlled equipment and facilities through advanced command within the engineering system. A series of major decisions and global strategic command and control have been implemented. The U.S. head command and protection engineering system is mainly composed of the Cheyenne Mountain Underground Command Center and the U.S. state