Defense Department officials have told Congress that the already ballooning costs of the F-35 joint strike fighter are likely to soar much higher when new estimates are completed in the summer. In the Selected Acquisition Report for the F-35, a detailed document sent to Congress on Thursday, the Pentagon said it expects that cost studies now under way will produce estimates dramatically higher than those used in recent months to prepare the 2011 defense budget request. Based on figures in the document, the average cost of one F-35 -- $62 million when the program was launched in 2002 -- could...