Doug,
This tired old one has made the rounds a few times. See:
http://www.snopes.com/politics/military/starbucks.asp
No fan of Starbucks and their over-priced products, either. FYI: Starbucks sells their coffee to the US Navy at an extreme discount. So much so, it is provided in all of the galleys (Officer, Chiefs and Enlisted) free of charge onboard my old buddy Jack's ship the USS Ronald Reagan. Just so you know.
- Jerry Ketsdever