sentences:  A Program Executive Office was established on 25 February 1998.As with the "Arleigh Burke"-class, the construction of the DD-21 ships would be split between Bath Iron Works and Ingalls Shipbuilding to preserve the industrial base.However, there would be a competition between the two yards to design DD-21 and to be the full-service contractor for the class, which would mean the winning team receiving 85% of the total program costs of around $70 billion.