Dr. Jill Biden, wife of Vice President Joe Biden, offers examples of how Americans across the country have supported military families during the event to mark the first anniversary of "Joining Forces" at the White House, April 11, 2012. Dr. Jill Biden, wife of Vice President Joe Biden, offers examples of how Americans across the country have supported military families during the event to mark the first anniversary of "Joining Forces" at the White House, April 11, 2012. SHARE: Download: Full Size (2.14 MB) Tags: Photo Essays Credit: VIRIN: 213626-T-KXX54-320.jpg Photo Gallery