Is this the range that requires a range officer to be present to shot at any of the ranges?
The outdoor pistol and rifle ranges require an RO during hours of operation. It's to help prevent rounds from leaving the range, shotguns (not including slugs) from being used on target stands which destroy them, and to make sure ceasefire procedures are managed safely. There's a ton of members (most don't shoot there, but need it to be eligible for an LTC in Boston) and you have a wide range of skill levels. The indoor ranges (pistol and rimfire rifle) do not require an RO to be present and neither does the shotgun range and archery range.
If you ever want to check out the facility, I'd be happy to show you around as my guest.