U.S. aims to correct issue behind 2013 failed missile defense test

The U.S. Missile Defense Agency on Tuesday said it was optimistic it had found the cause of a failed missile defense test in July 2013 and aimed to carry out a fix for the entire fleet of ground-based interceptors by the end of the year. Missile Defense Agency Director Vice Admiral James Syring told U.S. lawmakers that officials had accounted for the problem while preparing for the next