A company has installed vending machines that sell ammunition in grocery stores in Alabama, Oklahoma, and Texas, raising concerns among gun control advocates. American Rounds company officials say the machines use an identification scanner and facial recognition software to verify age. The company's CEO says the technology makes the transaction at least as secure as online purchases. But activists say these safety measures belong in gun stores, not in places where families buy groceries. They worry gun violence will increase in a country where there have been 15 mass killings involving a firearm so far in 2024. On July Fourth alone, at least 33 people died in gun violence across the country.