Grocery workers have borne the brunt of the pandemic. Now supermarket shootings are on the rise.

These days, when Eddie Chavez supervises the self-checkout area at the Safeway supermarket where he works in Colorado, he swivels his head back and forth like a pendulum, keeping a constant watch on everyone who comes through the door.

Chavez has worked in grocery stores for four decades, and he never used to feel unsafe. But now “you just never know anymore when it’s going to be the next one,” he said.