Thanks for posting Ed- yikes- certainly this bears further investigation, but NCNG museum has been put in the position where the damage to their reputation has been done. Not an enviable position, for sure! You (obviously!) treat visitors with the utmost respect.
I will also point out that in my visits to NCNG and interactions with their volunteers, this has been far from the experience that I have had. It is hard to understand exactly how such incidents could occur, but if there was training on what not to do (but probably, more specifically what to do!) the museum has recourse in disciplining the offending volunteer. Good training is the hallmark of a quality and consistent experience.
That being said, since our visitors are our reason for existence (by way of our mission statement), we must treat them with the utmost respect and kindness. They are why we can do what we do- and it only takes one news report like this to destroy a reputation that has taken years to build. Unfortunately negative news tends to spread far more effectively (virally, if you will) than positive news, so take heed of that.
Steve