WASHINGTON – A D.C. father continues his quest for answers after losing three sons to violent crimes in the District. John Evans is the father of 14-year-old Avion Evans who died April 4 after authorities say he was shot and killed at the Brookland Metro station in northeast D.C. Avion’s death comes eight years after his older brother Johnny Evans III was stabbed to death at the Deanwood Metro station in April 2016.