Union workers assembling Boeing (NYSE:BA) fighter jets in St. Louis have overwhelmingly rejected the companys latest contract proposal, setting the stage for a potential strike. The vote affects more than 3,

The threat of labor unrest follows last year’s two-month strike by a separate machinists union in Seattle, which disrupted Boeing’s ( BA) commercial jet production and prompted the company to raise $24 billion through an equity offering to offset the financial toll.

Boeing expects more than 3,200 union workers at three St. Louis-area plants that produce U.S. fighter jets to strike after they rejected a proposed contract