Prayers go out to the two wounded workers. Nut jobs can pop up any time any where, it's why we carry.
It's very hard to speculate what I would do in this situation because I would be armed regardless of co. policy. As an unarmed sheep, run & pray might work? Hope I'm not the one up in the bucket. Those insulated electrical baskets do offer some cover, not if the BG is firing slugs. If a hydraulic line is hit you would become a sitting duck, I guess descending and bailing out would be the way to go. Hopefully the wacko is a bad shot. In America that we all want to see, the headline would have read, " Five Utility Workers Draw On & Kill Crazed Gunman".