Millions of Americans have experienced the coronavirus pandemic directly, as they or their loved ones suffered through infection. But for most of us, the experience is defined by weeks and months on end stuck at home. The shut-ins are testing the safety of our home environments. Stress and isolation combined with another feature of American life — easy access to firearms — could form a deadly brew. Last week we released results of a new study — the largest ever on the connection between suicide and handgun ownership — in The New England Journal of Medicine revealing that gun owners were nearly four times as likely to die by suicide than people without guns, even when controlling for gender, age, race and neighborhood.