Boeing CEO has issued an ultimatum to striking machinists as union leaders express confidence in reaching an agreement. The union is set to vote on a sweetened contract offer that includes a 38% pay rise, which is seen as a critical step towards ending the prolonged strike that has lasted for seven weeks. Despite mounting losses and plans for layoffs, Boeing remains optimistic about concluding the negotiations, having made multiple contract proposals. Recent talks have been productive, and the union leadership is urging members to accept the new deal. A vote is scheduled for Monday, marking a crucial moment in the negotiations between Boeing and its machinists.