Spy SatellitesThe National Reconnaissance Office and the Pentagon are planning to replace virtually their entire inventory of imaging satellites during the next decade or so at a cost of more than $60 billion.

• 间谍卫星国家侦察局和五角大楼计划投入600多亿美元，在未来10年左右的时间内更换几乎所有的成像卫星。