ULA aimed to launch up to 10 Vulcan rockets this year—it will fly just once

ULA's Vulcan rocket will launch only once this year instead of the planned 10 flights due to ongoing delays stemming from solid rocket booster issues discovered after its debut flight in January. While engineers identified and fixed a manufacturing defect in the booster insulation, officials are conducting additional inspections of motor casings recovered from the ocean to ensure safety before proceeding with future missions.