Mark Layne was informed ~ 1:30 that all sub-systems had signed off on BSC2, so the Apollo crew was re-called from X End for dome replacement. The dome was in place by 3:15 and the bolts are being torqued now. Hard covers will be installed before the crew leaves today. Below, please find the checklist that Apollo is using to sequence their close-out activities. 1. Remove Walking Plates from BSC 2 (Place in E-Mod Staging Cleanroom)-done 2. Replace dome on BSC2 (Check with SEI first: unlock ISI check cables-done 3. Place hard cover on BSC2/HAM3 spool openings-in progress 4. Install curtains on HAM3 cleanroom 5. Move BSC cleanroom to beamtube by East Bay pipe bridge 6. Dis-assemble Work Platform (Place on floor by BSC7) 7. Move HAM3 cleanroom north as far as possible 8. Close gaps in cleanroom to contain BSC2 spool area 9. Move SEI related electronics over center of spool area 10. Insert small spool piece 11. Insert large spool piece 12. Install HAM3 east door 13. Move cleanroom from pipe bridge area to HAM4-plug in-turn on 14. Call for HAM4 cleaning 15. Install HAM2/1 east doors 16. Install HAM 2/3 west doors 17. Install BSC1 viewports 18. Remove HAM4 north door 19. Install blank on septum plate between BSC2 and HAM4 20. Install HAM4 north door