Hi Jon
Yes I did have the pleasure of attending one evening when my father was the honored guest on his retirement from Navy Department as a civilian scientist. By the way there is a new web site for the Washington Marine Barracks
http://www.marines.mil/unit/barracks/pages/welcome.aspx
As a kid I would go watch the Marine, Navy, and Air Force marching bands practice on a field near our home. Once they closed Bowling Air Force base and Anacostia Naval Air Station as active fields the bands moved on to the run ways there. Particularly enjoyed it when the bag pipe units would practice.
Cheers Phil