Secretary Panetta speaks to troops with the 172nd Infantry Brigade at forward operation base Sharana. Secretary of Defense Leon E. Panetta speaks to troops with the 172nd Infantry Brigade at forward operation base Sharana, Afghanistan, on Dec. 14, 2011. SHARE IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 590612-S-XRP75-350.jpg Photo Gallery