RE: CPR face mask and shield
The science seems to have moved away from mouth to mouth ventilation cpr: compressions only or breathless cpr is now standard for resuscitation in a setting where an ambu bag is unavailable. The masks and shield devices never worked very well in terms of keeping rescuers distant enough from the patient to provide protection from body fluid contamination.

I performed mouth to mouth on an ER patient who was graceless enough to arrest while another patient was using the ambu bag-in 1978, our ER only had one ambu bag. It was a very instructive experience. I got real pushy about getting some spare ambu bags.

Anyway, this might be a way to lighten the load.