PSL is shut off for the night to allow Robert S. to make accelerometer measurements on the periscope, without interference from the chilled water lines. PMC, ISS, FSS servos are off, everything will be started back up tomorrow morning.

HEPA units are off, make up air is set to 30%, creating a ~0.01" water pressure differential between laser and anteroom. AC units were shut off via touchpad interface, but they may still be on.