... have unfortunately been done by paid range officers at a public facility. I've usually found the ranges I feel safest at are the ones ran by volunteer club or range safety officers.
At officer school in Newport they have an indoor 9mm range, and a group of doctors, lawyers, nurses (staff officers) went through the range. They told the leader to count the number in the stick, so she pointed her firearm first at herself, then at each of the other members of the stick and said aloud, "one, two, three ..." I think she made it to four before the RSO got to her. They actually let her fire a single round later, but she didn't make it to the second before an intervention probably spared the shooter on her right who was looking down her barrel when she turned to say, "look at that!" Yep, she's out there probably in Afghanistan somewhere with a hopefully empty 9mm in probably a geewhiz shoulder holster that points fore and aft.