You know, the Winchester Salute Cannon is still on the market.
My grand-father bought one at the end of WWII when my Dad came back home after serving from 4 years in the United States Navy.
He had a large house on the Hudson River, and fired the cannon when one of our Navy armadas steamed up the River. It was all part of the celebration, honouring our men and women who served.
Go here:
http://www.cannon-mania.com/winchester.htm