Cleanrooms were moved into place today: 1 over the BSC, 1 over the HAM, 1 for the dome, 1 for garbing/staging, and 1 for wrap-bag-tag of viewports and feedthroughs. (So, this time around we'll be a FIVE-RING circus!) Many other items were staged in preparation for door/dome and table removal on Friday. First cleaning was done this afternoon.