The ALS Comm and Diff "shuttered" states are now GoTo states, since we've had two or more locklosses today when shuttering ALS.  This is somewhat similar to what we saw back in August (aLog 20286) where if the ALS can't get to the shuttered state, it goes to lockloss, going through the ALS Down state, which clears things like the DARM gain.  This isn't good, since at this point we're not using ALS for DARM anymore, so it doesn't matter if the green laser loses lock.  Today, the green Xarm was losing lock before we asked for the shuttered state, which was causing the guardian to take ALS_DIFF through its down state.  Anyhow, "shuttered" is now a GoTo state so that even if the greens lose lock, we don't lose the whole IFO needlessly.