It's been six months, but police are not giving up their search for the hit-and-run driver who killed a U.S. Marine last fall.
Cpl. William Ferrell was hit and killed on Route 15 in Frederick County when he was helping a driver who couldn't drive in a heavy rainstorm back in September.
Investigators say they are looking for a heavy duty pick-up truck with a dual-wheel axle that was hauling a trailer.
Anyone with information is asked to call police.