Boeing factory workers voted Wednesday to reject the company’s latest contract offer and to continue a six-week strike that has halted production of the aerospace giant’s bestselling jetliners. Local union leaders in Seattle said the proposal fell short of the majority of support needed from members of the International Association of Machinists and Aerospace Workers who cast ballots on Wednesday. The offer, which was rejected by 64% of employees, included pay raises of 35% over four years. The