Associated Press | Just days after a monthlong walkout ended at its California C-17 plant, Boeing Co. is facing another possible strike.

The plane maker’s machinists union in St. Louis has voted to reject a company offer that would have replaced a contract that expires Sunday. The International Association of Machinists and Aerospace Workers said on its website Sunday that members voted 1548-532 to reject the offer, and voted 1619-459 to strike.

Get the full story: Boeing machinists in St. Louis vote down contract.