EMT here. I've never had a patient with a tungsten ring but I'm pretty sure our ring cutters would not work. So I looked it up. Apparently you have to break them off with vise grips [0]. One more tool for my kit I guess.

[0] https://m.youtube.com/watch?v=poM423pewRE

Thank you for everything that you do! I imagine EMTs don't get nearly enough thanks amidst all the rush and horror.