CHECKPOINT 91 U.S. Army Gen. David H. Petraeus, second from right, the new commander of the NATO International Security Assistance Force in Afghanistan, visits with U.S., NATO and Afghan forces at checkpoint 91 in Kandahar, Afghanistan, July 9, 2010 SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 752634-W-BRF54-056.jpg Photo Gallery