The bodies of three American soldiers who had been missing since last week after their armored vehicle became trapped in deep mud during a military exercise in Lithuania have been recovered, the U.S. Army said Monday. A search for the fourth soldier remained underway. The soldiers were aboard an M88A2 Hercules , a hulking armored recovery vehicle designed to tow tanks and other heavy machinery, when it became submerged in a bog last Tuesday, military officials said. The troops were believed to