In the paper the USA national missile defense system and theater missile defense system were introduced briefly. Infrared technique on missile defense of America were emphatically described.

文章简要介绍了美国国家导弹防御系统、战区导弹防御系统，着重介绍这两种系统中使用到的红外技术。

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Such a forest of rockets could conceivably survive not just massive pre-emptive bombing, but also any theater missile defense system which might be deployed against it.

CNN: Milestones and Millstones

Our best policy option is to continue erecting the Theater Missile Defense system in the region, for it is only this capability that protects us and our allies for the two communist states.

CENTERFORSECURITYPOLICY: Why North Korea's nukes?

And here lies the seed of possible dissonance between South Korea and the U.S. The former may find it worthwhile to woo Beijing's indispensable support in forging peace with the North, even to the point of eventually showing American forces the door and, more important, declining to join the proposed U.S. Theater Missile Defense system.

CNN: Politics: The Cold Shoulder War