A Wave is symbolized as one of the strongest forces on earth (Strength). also if you read more into it, its about faith, a wave is you against mother nature, you cannot control it, you just have to put your faith into her.
I got this Tattoo after my twin brother died after three tours in the Middle East with the US Army. I had his name badge tattooed right where I put my hand over my heart for the Pledge of Allegiance. Every pledge is a tribute to his service and sacrifice.