Lance Cpl. Alberto Lucio, 20, was assisting at the scene of a crash near Camp Pendleton early Monday when he was struck and killed by a box truck on Interstate 5.
A U.S. Marine hit by a truck and killed while he was aiding motorists along a Southern California highway has been identified as a 20-year-old from Tennessee
Good Samaritan Marine Alberto Lucio, 20, was remembered as someone who gave his life in the service of others after he was struck by a truck while helping two motorists on the side of a highway