In the mean time, I chained the equipment cabinets to the wall as a safety precaution. It took about two weeks for the contractor to repair the damage. Things are now back to normal, and I can go back to worrying about the aging electrical system, where to put several new computers, and how to deal with the lack of space in general. Just a reminder, It is thunderstorm season again. If you use a rooftop antenna for your stereo or TV, make sure that it is properly grounded.
Good grounding is the cheapest insurance against lightning damage.
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