In this board message at Strategypage, there is announcement that a VBS2-Lite (US Army version) will soon be made available to soldiers and DoD civilians.
The final paragraph of this gentleman's message has me hoping that eventually VBS2-Lite US Army will be available for anybody (bold is mine):
BTW the U.S. Army will soon be releasing VBS2 Lite, as the British Army has already for their own version called JCOVES, and this software will be available free for download to anyone who wants a copy. If the current schedule holds this will be in March 2010.
UPDATE: If you scroll down in the board message at Strategypage (links provided above), you will see that definitively this is going to be available to civilians. Quoted from that message:
The U.S. Army will be releasing VBS2 Lite very soon. Anyone, including civilians will be able to have a copy of it. At present there is no provision for this to be available on civilian accessible online sites but I am working on that. Perhaps at StrategyPage.com? Just keepm in mind its a 3-1/2GB downloadable file...