At Kennedy Space Center, NASA's mobile launcher, atop crawler-transporter 2, makes the trek along the crawlerway to Launch Pad 39B for several days of systems checks. Then, the crawler carried the mobile launcher to the Vehicle Assembly to begin testing with the 10 levels of new work platforms and other systems in High Bay 3. Workers and guests viewed the mobile launcher's trek to the VAB during an employee event on September 7, 2018. Credit: NASA #nasa #mobilelauncher #ml #kennedyspacecenter #launchdirector #astronauts #womeninspace #exploration #space #groundsystems