A U.S soldier of 82nd Airborne patrols near a forward base in the Ghorak district of Kandahar southern Afghanistan. Rafiq Maqbool/AP hide caption

itoggle caption Rafiq Maqbool/AP

President Obama traveled in the presidential limo with his dog, Bo. Adviser David Axelrod tweeted this photo from the White House Flickr account to tweak the Romney campaign. Pete Souza/White House hide caption

itoggle caption Pete Souza/White House

A screengrab shows Google's new search feature, in which results from a user's Google+ community are promoted at the top of the page. NPR hide caption

itoggle caption NPR