Hussein al-Asadi, a representative from Iraqi Prime Minister, and U.S. Army Captain Timothy Martin shake hands during a ceremonial handover of Camp Echo in Diwaniya, Iraq, Dec. 14, 2011. Camp Echo is the 504th military camp handed over from the U.S. to Iraqi military forces. There is only one more camp left to be handed over before Dec. 31, the deadline of the withdrawal of the U.S. troops in Iraq. [Xinhua]