Lots of prep work so that the optic can go back into the chamber.
Work permits have been signed for staging and cleaning at BSC8 and for the venting of YBM. 
Below please find a checklist of items that need to be completed prior to entry,  (ETA) and whose responsible for those items. I'll *note items as they get completed.
-Garbing/staging cleanroom moved into place on west side of chamber cleanroom (*Completed 09 April 2012) Apollo-Dodson
-Engine hoist located and moved into position (*Completed 09 April 2012) Apollo-Dodson
-Locate BSC arm parts and stage (*Completed 09 April 2012) Apollo-Dodson, CIT-Buckland and Anderson
-Locate and move garbing/staging cleanroom contents into position. (*Completed 09 April 2012) Apollo-Dodson and me
-Vent BSC8 (~09 April 2012) Gerardo
-Stage special equipment (~09-10 April 2012) Travis
-Box up ITMy lower structure (~09 April 2012) Travis and Gerardo
-Cleanings (~10 April 2012) Terry and crew
-Door removal (~10 April 2012) Apollo
-Install BSC arm (~10 April 2012) Apollo, CIT-Buckland and Anderson
-Crane lower stucture in storage container to chamberside (~10 April 2012) Apollo?