Since Galileo was designed to provide the highest possible precision (greater than GPS) to anyone, the US was concerned that an enemy could use Galileo signals in military strikes against the US and its allies (some weapons like missiles use GNSSs for guidance).
伽利略系统的目的是为所有用户提供尽可能高的定位精度（比GPS还高），因此，美国担心其敌人会利用伽利略系统的信号对美国及其盟友进行军事打击（一些武器使用卫星导航系统进行制导）。