Navy Secretary Carlos Del Toro has directed an analysis of shipbuilding challenges, according to a Thursday announcement that cites concern for the Columbia-class submarine and Constellation-class frigate programs. The review, which is due in 45 days, will assess national and local causes of shipbuilding challenges and provide recommendations for bolstering the shipbuilding industrial base and reducing schedule risk. Assistant Navy Secretary for Research, Development and Acquisition Nickolas Guertin and Naval Sea Systems Commander Vice Adm. James Downey will conduct the...