On Monday, the Bushes met the Obamas for a dutifully cheerful White House tour. Today, we’ll be treated another Kodak moment, as the Cheneys give the Bidens a tour of the Naval Observatory. Cheney’s office released a terse statement—"The Cheneys and the Bidens will have a private meeting and then tour the residence”—but one can imagine the rich possibilities. Will Cheney tweak Biden for mocking him on the stump? (“Dick Cheney has been wrong on everything the last eight years.") Will he remind Biden to always lock the undisclosed location? Stay tuned for the awkward photos.