"What happened: Guardian Angels, a volunteer crime prevention group with 150 members, resumes subway patrols following last week's tragic incident where a woman was burned alive at Coney Island-Stillwell Avenue station. Teams of three will conduct wellness checks and report incidents. Why it matters: Despite overall transit crime decreasing by 6.1% this year, subway homicides have increased from five to nine cases. The Guardian Angels aim to fill security gaps, particularly focusing on homeless and mentally ill populations."