Discovery Discovery Discovery Discovery Stack Structure Cone and Ogive White Room Stack VAB Nose Structure This End Up Crawler and Rocket Row Backyard Discovery Tank and Dewar Bipod Belly Windows Nose Escape Basket Slide Wire Middeck White Room White Room Arm Leading Edge T-0 Umbilical Carriage Engines SRB SSME Engines Repairs Stack Skirt and Plume Hole Stack Skirts Skirts FSS and Beanie Cap Stand Crawlerway Flame Trench Big Holes Flame Trench In the Trenches Crawler Crawler Crawler Bunker Tunnels Modifications