Since the new upgraded Patriot missile system can shoot down aircraft...
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|2||Trump EPA awards $100 million to upgrade Flint water system||03/17/17|
|3||Israel upgrades missile defense system, for possible attacks from Iran and Syria. 8-05-12||08/05/12|
|4||Russia To Upgrade S-300 Missiles System Meant For Iran||10/27/15|
|5||Russian missiles get anti-American upgrades||12/06/08|