TITLE: 03/17 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC STATE of H1: Observing at 69Mpc INCOMING OPERATOR: Ed SHIFT SUMMARY: In observing the entire shift. No issues or changes in status to report. Note Cheryl's alog about SDF changes for bounce mode damping if we lose lock. LOG: ~03:39 UTC Unidentified noise in control room. Sounded vibrational. Lasted for about a minute. HVAC?