U.S. officials are laying out a massive military response to the Haiti earthquake, saying that ships, helicopters, transport planes and a 2,000-member Marine unit are either on the way or likely to begin moving soon. Gen. Douglas Fraser, head of U.S. Southern Command, said Wednesday that one of the U.S. Navy's large amphibious ships will likely head to Haiti with a Marine expeditionary unit aboard. Fraser said other U.S. military forces are on alert, including a brigade, which includes about 3,500 troops. Fraser said during a news conference with other U.S. officials that the Pentagon is "seriously looking at" sending...