The two missile defense systems that the US delivered to Poland this week are part of a weapons system upon which the US military has heavily relied for nearly 40 years.
원문출처 : https://www.cnn.com/2022/03/10/politics/us-patriot-missile-defense-system-explainer/index.html
원문출처 : https://www.cnn.com/2022/03/10/politics/us-patriot-missile-defense-system-explainer/index.html