JOINING FORCES First Lady Michelle Obama, wife of President Barack Obama, and a group of military children are displayed on a marquee at the Washington Nationals' Park, during their "Joining Forces with the Washington Nationals - Honoring Our Military Families," event honoring military families, July 5, 2011. Joining Forces is a national initiative spearheaded by the first lady and Dr. Jill Biden, wife of Vice President Joe Biden, to keep support for military families at the forefront of the minds of Americans SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 954504-F-MUE54-506.jpg Photo Gallery