Can someone either validate me/tell me if I'm overreacting?

Dh and I live in the Bay Area, and in the hardest hit county. We are both essential workers; I've been going in two days a week, and he goes in three and a half. Other than once/twice a week trip(s) to the store for essentials (both adult kids are here with us), I don't go anywhere else. When I do go, I take a mask, wipes, etc. At work, I have been moved to a temporary office where I am by myself, I keep a large distance between coworkers, and use a paper towel to open any doors or use office equipment. Basically, I want to reduce our chances of getting sick as much as possible.

Dh's office is small; there are two offices with cubicles in each. They created a schedule to stagger the shifts so that not everyone is in at the same time. Last night we were getting ready for bed, and he tells me that he and his co-workers (6 total) drove to get lunch earlier in the day. Four rode in one car, and two in another. I was still processing that when I read that someone in a nearby county, who does the same job as him and is around the same age, just died from Covid-19. Not only that, but someone who works out of his office (dh did not have direct contact) was diagnosed and hospitalized about three weeks ago. I'll admit that the news story was a trigger, and I told him that I thought the fact that he and his coworkers drove to lunch together in a SMALL sedan was totally irresponsible and that he is putting me, the kids and himself at risk. Why, WHY do SIX people need to ride to pick up lunch at a restaurant that you can't even eat at?? Why not send one person to get the food? And this was one day; I don't know if this is going on every day or not, because he got so angry and shut down. I kept talking about it and he said, "I'm going to live my life and not be paranoid. I'm not talking about this anymore." WTF??

I ended up sleeping on the couch (because at least I can bleach or burn the sheets!) and am still just as livid today. Am I overreacting? What would you do? There is nowhere to quarantine him because both kids are occupying the extra bedrooms and they are storing their stuff in the garage. I'm just so mad and disappointed, and now my anxiety is through the roof...even more so.