Everything was going well until 10 minutes before the end of the shift. The IFO was locked at NLN (26 W) and the range was fairly steady around 60 Mpc. Then at 14:50 UTC the IFO lost lock, guardian went into error, and it looks like various frontend models have crashed.

08:06 UTC Stefan done commissioning. IFO is locked at NLN (26 W)
14:50 UTC Lock loss. ISC_LOCK node in error. LOCK_LOSS_SHUTTER_CHECK node in error. Hit load on ISC_LOCK. Lots of voice alarms. Various frontend models are white.