First Lady Michelle Obama leads the applause for Dr. Jill Biden, a military mom and wife of Vice President Joe Biden, as Jennifer Pilcher, a Navy spouse, looks on during a Joining Forces Mother's Day event for three generations of military families at the White House in Washington, D.C., May 10, 2012. First Lady Michelle Obama leads the applause for Dr. Jill Biden, a military mom and wife of Vice President Joe Biden, as Jennifer Pilcher, a Navy spouse, looks on during a Joining Forces Mother's Day event for three generations of military families at the White House in Washington, D.C., May 10, 2012. SHARE: Download: Full Size (5.17 MB) Tags: Photo Essays Credit: VIRIN: 130172-Y-ZTC68-945.jpg Photo Gallery