American Idol winner Jordin Sparks performs at the Commander in Chief's Ball at the National Building Museum, Washington, D.C., Jan. 20, 2009. The ball, hosted by President Barack Obama, honored America's servicemembers, families, the fallen and wounded warriors. American Idol winner Jordin Sparks performs at the Commander in Chief's Ball at the National Building Museum, Washington, D.C., Jan. 20, 2009. The ball, hosted by President Barack Obama, honored America's servicemembers, families, the fallen and wounded warriors. SHARE: Download: Full Size (0.7 MB) Tags: Photo Essays Credit: VIRIN: 883091-V-SSS11-065.jpg Photo Gallery