Boeing's decision to build a new airplane-assembly plant in Charleston, S.C., will change the shape of the company and dramatically alter how both the state of Washington and the Machinists union approach Boeing. Washington state must accept a future where it competes for every new Boeing airplane program, with low-wage South Carolina as a certain rival. The Machinists must accept that if Boeing doesn't like their demands, it can direct future work to its nonunion Charleston plants. A defining moment could come about 2015, when Boeing will choose where to build the successor plane to either the Renton-built 737 or...