Following the SEI group sign-off on the BSC3 Cartridge, I started cleaning up the ISI today. So far, electronics are powered down, all cabling is disconnected (in-air and in-vac), CPS racks removed, ISI locked, test stand nuts removed, all the hidey-holes in St0 checked for loose tools and all in-vac cabling is stowed. There are still some loose parts on the ISI to be removed (keel mass and other masses that were used in testing), lift pads need added and the ISI needs covers. The cleanrooms also need to be re-arranged, non-cartridge clean items need to be stowed in the neighboring clean-room, and a path needs to be cleared to allow the cartridge cleanroom to be moved out of the way prior to flight. Shouldn't take more than a couple of hours to finish prep, though.