Stack Structure Stack Structure This End Up VAB Crawler and Rocket Row Nose Tank and Dewar Backyard Bipod Belly Discovery Windows Nose Escape Basket Slide Wire Middeck White Room White Room Arm Leading Edge T-0 Umbilical Carriage Cone and Ogive Discovery Discovery Discovery Discovery Tunnels Bunker Passage Safe Haven Stands High Bay Passage Belly Big Door Ares-1X Ares-1X External Tank Saturn Platforms SRB Nose External Tank Floating ET Inside the Glove Hatch