Core Viewpoint - Boeing's latest labor contract proposal has been rejected by the union representing workers at its St. Louis fighter jet assembly plant, leading to a planned strike by approximately 3,200 workers [1] Group 1: Labor Relations - The International Association of Machinists and Aerospace Workers announced the rejection of Boeing's final proposal, which included salary increases and additional vacation time [1] - The strike is set to commence at midnight local time on August 4, following the union's decision [1] Group 2: Workforce Impact - The union members primarily engage in the manufacturing of Boeing's fighter jets, missiles, and ammunition, as well as producing components for Boeing's commercial aircraft [1]