A government watchdog has found unplanned work and workforce problems are the two key factors causing the Navy to fall behind on aircraft carrier and submarine maintenance availabilities. "The Navy's four shipyards completed 38 of 51 (75%) maintenance periods late for aircraft carriers and submarines with planned completion dates in fiscal years 2015 through 2019, for a combined total of 7,424 days of maintenance delay," according to a Government Accountability Office report published today. The report is one of several...