"We are ‘go' to proceed with the Artemis launch countdown." New footage shows NASA's Launch Director Charlie Blackwell-Thompson leading the team in a simulation countdown. During these simulations, operators step through prelaunch checklists to practice the procedures for liftoff and ascent. Some simulations focus on specific operations while others walk the team through critical portions of the countdown. Each rehearsal allows the team to gather useful data to refine the system. Lessons learned from launching the uncrewed #Artemis I will help the team identify process, performance, and technical changes needed for future missions. Credit: NASA/Frank Michaux #Launch #LaunchCountdown #NASA #Space #LaunchSimulation #STEM #MoonRocket