The idea of point defense goes back to before most species even had the ability to orbit their planets, much less the formation of a galaxy spanning civilization.

点防御理念可以追溯到很久以前，那时大多数种族甚至还不具备环行星轨道飞行的能力，更不必说建立银河文明了。

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The Blue side also had a National Missile Defense system, as well as reusable space planes that could be launched to quickly place new satellites in orbit or repair and refuel ones already there.

CENTERFORSECURITYPOLICY: Grasping the Importance of Space Power