Bubba was out clearing snow just outside the LVEA with the big front loader. The IFO saw this, and the range was a little low for a little while, but stayed locked just fine (currrent lock more than 7 hours long so far). Good to know that snow clearing doesn't necessarily mean we'll lose lock.
Not related to the snow ploughing but the other day when I went into the PSL Enclosure, Richard was monitoring the status of the IFO. The IFO remained locked as all the HEPA FFAs and make up air fan speed was increased. The IFO remained locked when I went into the Laser Room and turned on the AC units. The sensitivity was awful, of course, but the IFO remained locked. Richard / Peter