A crane is used to lift the Northrop Grumman-manufactured right aft exit cone for the Space Launch System’s solid rocket boosters away from its shipping base inside the Rotation, Processing and Surge Facility at NASA’s Kennedy Space Center in Florida on Dec. 9, 2019. The right and left aft exit cones were shipped from Promontory, Utah. They will be checked out and prepared for the Artemis I uncrewed test flight. The aft exit cones sit at the bottommost part of the twin boosters. The cones help provide added thrust for the boosters, while protecting the aft skirts from the thermal environment during launch.