In Missiour, is a Nurse required for Alzheimer Lock-downed unit in an LTC?

Edited because I can't spell Missouri...LOL Lesson-don't eat PB & J and type at the same time.

The place I work is getting ready to open the Alzheimer's Hall....it will be a locked down unit (except that showers are outside the doors) and will be staffed by 2 CNA's (so they say) but no nurse. Some of us were wondering if this was even legal? One of our CNA's worked a locked down unit by himself and got pretty beat up because there was no one to come help him.