During sunrise on Oct. 20, 2020, the mobile launcher for the Artemis I mission, atop crawler-transporter 2 (CT-2), arrives at Launch Pad 39B at NASA’s Kennedy Space Center in Florida. In view inside the CT cab is Breanne Rohloff, crawler-transporter driver and mechanical engineer with Jacobs. The nearly 400-foot-tall mobile launcher will remain at the pad for two weeks, while engineers with Exploration Ground Systems and Jacobs will perform several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon.