Freedom is not free
"Freedom Is Not Free" was first coined by retired U.S. Air Force Colonel Cat Hitchcock of New Mexico Military Institute. The idiom expresses gratitude for the service of members of the military, implicitly stating that the freedoms enjoyed by many citizens in many democracies are only possible through the risks taken and sacrifices made by those in the military, drafted or not. The saying is often used to convey respect specifically to those who have given their lives in defense of freedom.
"Freedom Is Not Free" is engraved into one wall at the Korean War Veterans Memorial, Washington, D.C.. There is a fountain in front of the memorial.

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