根據根據斯德哥爾摩國際和平研究所(Stockholm International Peace Research Institute，簡稱SIPRI)，米帝和NATO軍事開支視乎西方盟國有否大規模戰爭活動而變化，如韓戰、越戰和反恐戰。以軍事開支佔GDP比率計，基本上是逐年下降，可見米帝開片對對象每次都會下降一級。由和共匪在朝鮮的直接衝突，到共匪和米帝的南北越代理人戰爭，和一場外星人侵略地星但打到破產的反恐戰。
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