BWX Technologies' chief executive said today the company's missile tube rework efforts are on track, noting the majority of the repairs are scheduled to be complete by mid-year. The company last year disclosed it had identified welding problems on missile tubes slated for the Columbia-class submarine and later established a reserve to cover repairs. Speaking to analysts this morning, Rex Geveden said the company is "working through very challenging, self-imposed inspection requirements using ultrasonic inspection techniques." "We're recovering from that...