(Editor's Note: This article has been updated to include information regarding a recent successful test flight of the LV-2 target missile.) The Government Accountability Office is having trouble determining the actual cost of the Missile Defense Agency's current long-range intercontinental ballistic missile targets, according to a new report. The March 30 report, which assesses "selected weapon programs," states that while Pentagon officials told GAO auditors that the recurring unit cost "for the six LV-2 targets averages approximately $30.3 million for...