I wondered what that building was.
http://news.cnet.com/8301-13860_3-10033827-56.html
The predominant assumption in the blogosphere is that one of the AV geeks tasked with backdrops for the evening's speech was told to get a photo of Walter Reed Army Medical Center, but got my middle school instead. Weird thing is, as pointed out by Talking Points Memo, the lead blog on the still-developing story, Walter Reed Middle School was also the backdrop for Matt Santos' announcement of his presidential candidacy on The West Wing. (Another Hollywood factoid: the show Head of the Class was also loosely based on Walter Reed Middle School's Individualized Honors Program.)