Lost more than 5 hour lock 10 minutes before end of shift. SUS OMC and HAM6 ISI tripped. Cause not immediately obvious. Handing over to Ed. 23:00 UTC Jenne is in LVEA by HAM6 23:23 UTC Gerardo back from overfilling CP3 23:27 UTC Disconnected and reconnected conlog-test-master to ~100,000 channels 23:41 UTC Starting initial alignment 23:46 UTC Changed from VERY_WINDY_NOBRSXY to WINDY. Improved X arm transmission and stability. 23:55 UTC Jenne back, whitening AS_A chassis swapped (Jenne, Mark, Filiberto) 00:21 UTC Initial alignment done. Jenne to LVEA. 00:42 UTC Jenne back. Starting relocking. 01:36 UTC NLN 01:55 UTC Jeff K. starting calibration sweeps 03:00 UTC Terra starting excitation of PI mode 2 03:18 UTC Jeff K. done 04:51 UTC Nutsinee to mezzanine to check TCS chiller 04:59 UTC Nutsinee back 05:36 UTC Jenne to LVEA to jiggle RF45 cable 06:01 UTC Jenne back 06:50 UTC Lost lock. SUS OMC and HAM6 ISI tripped.