MISSION SMILE U.S Air Force Staff Sgt. Shirly Polk chats with Maria, 4, during a donation mission at the Mother Teresa Orphanage in Kabul, Afghanistan, May 10, 2012. Polk is a member of the International Security Assistance Force headquarters volunteer community relations program, which distributes donations, supplies and clothes to area organizations for residents. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 086748-P-KUH38-754.jpg Photo Gallery