I recently became a US citizen, what are some great ways to show my patriotism?

I'm a college grad so I've been giving thought to becoming an officer in the US Navy, maybe SEALs if I'm good enough. What else can I do to demonstrate my love of country, I used to be a Canadian citizen up until I got my Green Card and my friends like to make fun of me by calling me a Canuck, my wife does it too.