There are just a few days left before U.S. Army Capt. Nathan Williams finally gets to go home. As violence in Iraq is sharply down and Iraqi forces are taking more responsibilities, the United States is preparing for the withdrawal of all combat forces by August 2010 and everyone else by 2012. That means in the coming days and months, tens of thousands of soldiers will be making the same journey as Williams and his troops, from Iraq to Kuwait and finally to the U.S. — the long journey home.