The strike started at three Midwest manufacturing plants after about 3,200 local members of the International Association of Machinists and Aerospace Workers voted Sunday to reject a modified four-year labor agreement,

Boeing union workers who assemble fighter jets strike in two states following rejection of contract offering 20% general wage increase and $5,000 bonus.

Boeing (NYSE: BA) faces fresh turbulence as 3,200 unionised defence-plant workers walked off the job at midnight Monday, its first defence-side strike since the mid-1990s and the company’s second work stoppage in under a year.