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 IMAGE: Download Image: Full Size (5.17 MB) Tags: Photo Essays Photo By: VIRIN: 130172-Y-ZTC68-945.jpg Photo Gallery