The PSL tripped off this morning, interlocks indicated a loss of flow in the laser head water circuit.  After restarting the laser from home, I drove out to the site to check a chiller alarm (that turned out to be a low water level alarm), and ended up having to reset the noise eater as I recovered the PMC/FSS/ISS (as usual when recovering from a trip).  The laser is now back up and running in the same state it was left in on Thursday.