http://blog.familytreemagazine.com/insider/2012/10/23/ArlingtonNati...
The Genealogy Insider blog says:
"Arlington National Cemetery has unveiled a public database of the 400,000 burials there.
Called ANC Explorer, the database is available online and as a Mobile app. You can search it to locate gravesites on a map; get details including birth, death and interment dates, and branch of service; generate front and back photos of a headstone or monument (where available); and get directions to those gravesites."
See the link for the rest of the post. The database can be visited directly at http://www.arlingtoncemetery.mil/GraveSiteLocator/GravesiteLocator....
I will add a link to our project overview.