Boeing is being hit with its second strike in less than a year after 3,200 hourly workers walked off their jobs building military aircraft.

Three Boeing defense plants face a strike as 3,200 machinists walked off their jobs. Members of the International Association of Machinists voted to strike.

Boeing's fighter-jet factory workers go on strike after turning down a new contract offer. The roughly 3,200 workers began their strike early Monday. Boeing had offered 20% wages increases, a $5,000 bonus and other improvements.