Only a few essential personnel would ride the cradles during shift.

Each annex has become a subsystem with the right and essential personnel placed where he can be of best service.

May I suggest that only essential personnel be sent down first?

But even many of those businesses are staffed only by essential personnel.

All but emergency essential personnel remain in their quarters.

By the sixth day all essential personnel were on the surface.

We're going into what may be a war zone, and you're stripping the ship of essential personnel?

I would appreciate it if my medical records were scanned only by absolutely essential personnel.

Peabody, or someone like her, had cleared it of all but essential personnel.

What other motive could he have for pulling essential personnel out of our defensive lines?