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"pil sung patch"で検索した結果

https://en.wikipedia.org/wiki/25th_Fighter_Squadron
Motto(s) "Pil Sung!" Korean (Certain Victory)[1]

http://warthognews.blogspot.com/2011/05/pil-sung-war-cry-echoing-throughout.html
Pil Sung! is the war cry of the 25th Fighter Squadron. Pil Sung! can be used to show approval or gratitude, as a greeting or salutation, and is a suitable closing remark at any squadron function.