Today, Travis peeled the BS FirstContact cleaning layers he applied last week.  (We had to feed the N2 Top Gun and hose through the side of the HAM3 East door since that door was off.)  Upon inspection, Travis found that there was some leftover FC streaks at around the 10 o'clock position on the AR surface of the optic, so he had to reapply the FC brush-on layer.  The HR surface appeared clean.  A few hours and a meeting later, we repeated the removal process, this time yielding a clean looking AR surface.

We unlocked the suspension, added the toilet seat shaped AR and HR baffles back onto the suspension cage, took a few pictures, pulled all tools from the chamber and exited.  We redamped/untripped the ISI and BS SUS from the control room.  The BS is not back to the nominal ALIGNED guardian state.  HAM3 was still damped even though we were in the vicinity.

The first picture attached is the view of BS-AR from the SR3 perspective, showing how the gold barrel wire protection baffle on the left side is now less in the beam path than previously (recall it was cut per a new revision of the drawing and reinstalled).  The second is the BS-AR as viewed from ITMX, again showing that the sharp edges of the right side baffle have been cut back per the drawing.

https://dcc.ligo.org/DocDB/0148/E1700418/001/BS%20WIRE%20BAFFLE%20MODS%20DETAILS.PDF