BACKPACK PAL U.S. Air Force Col. Mark Nichols helps an Afghan girl with her new backpack on Kandahar Airfield, Afghanistan, Dec. 31, 2009. Students from schools in Kandahar City are visiting the Afghan Expeditionary Air Group. Nichols is commander of the 738th Afghan Expeditionary Air Group. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 695679-U-QLR55-386.jpg Photo Gallery