OCEANSIDE, Calif. (AP) — 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.

Lance Cpl. Alberto Lucio died early Monday while helping a couple in an SUV who had been in a crash on Interstate 5 in Oceanside, north of San Diego. Lucio died at the scene near Camp Pendleton, where he was stationed and worked as a military policeman.

Marine officials said he was from Smithville, Tenn.

The Union-Tribune reports his military awards include the National Defense Service Medal and the Global War on Terrorism Medal.