Labor unrest at Boeing could claim another casualty soon in the relatively fragile aerospace supply chain. Wednesday evening, The Financial Times reported that Boeing’s 737 MAX fuselage supplier Spirit AeroSystems Holdings would begin to furlough workers in the coming weeks if the machinist strike against Boeing lingered. Workers represented by the International Association of Machinists and Aerospace Workers walked out on Sept. 13 after rejecting a tentative agreement by an overwhelming majority.