Boeing said Friday it would slash about 17,000 employees, roughly 10% of its workforce, and that it would end production of a cargo airplane made in Washington. The move comes as aircraft machinists in the Puget Sound region and other parts of the West Coast have been on strike for nearly a month after rejecting a contract offer from the company in September. Contract negotiations stalled earlier this week and manufacturing remains halted at Boeing sites around the region. Before the strike, the company was already facing financial losses and mounting debt.