A pedestrian killed by an out-of-control vehicle following a chase by officers in Oakland Wednesday was identified as Marvin Boomer, Ph.D., a teacher at Castlemont High School.The Oakland Unified School District on Friday confirmed Boomer was the person killed when a vehicle being pursued by the California Highway Patrol crashed into him while he walked with a companion at 12th Avenue and East 21st Street early Wednesday evening in the city's Clinton neighborhood.