Freedom is not free

I was in Virginia and Washington DC the past couple days and got a vivid reminder of our history. In Fredricksburg, Virginia, I walked around a field and over man made trenches from a battle in the Civil War. I visited a shop that was standing since the war and was shown holes in the ceiling where cannon balls had been shot through. Then in DC, I got a private tour of Ford's theatre where Lincoln was assassinated. I saw the WWW II memorial, which my father fought on and the Vietnam wall memorial, a war my uncle fought in. There was a inscription on a wall by the war memorial that said "Freedom is not free". I am grateful today to all those who have paid so much so that I don't have to.