SURPRISE VISIT President Barack Obama waves to U.S. troops on Bagram Air Field during a surprise visit to Afghanistan, March 28, 2010. He told the troops that they "show all of America what’s possible when people come together, not based on color or creed, not based on faith or station, but based on a commitment to serve together, to bleed together and to succeed together as one people, as Americans.” SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 115403-M-GVQ27-505.jpg Photo Gallery