Kennedy is convinced that the bracelets can spark a change of heart and mind. She’s collected bullets from people who had contemplated suicide, she says; others who plotted to avenge the murders of their loved ones. Last year, she was contacted by the widow of Chris Hixon, the athletic director at Marjory Stoneman Douglas High School who died trying to save students. Debra Hixon donated hundreds of bullets belonging to the Navy vet. In those bracelets, Kennedy honored Hixon with words that seemed to sum up his life: “If not me, then who?”