Winnefeld Attends Invincible Spirit Festival Navy Adm. James A. Winnefeld Jr., vice chairman of the Joint Chiefs of Staff, attends the Invincible Spirit Festival hosted by the Gary Sinise Foundation and Naval Support Activity Bethesda in Bethesda, Md., Oct. 7, 2014. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 119614-A-XKJ96-974.jpg Photo Gallery