A search is continuing for a man from San Rafael after he failed to return from a day of hiking in Sequoia National Park. --The National Park Service says 31-year-old Tom Heng was last seen around 1 p.m. on Sunday near the 13,000-foot mark on Mount Langley. Heng has short, black hair, stands 6-feet tall and weighs about 165 pounds. He was last seen wearing a white t-shirt, tan full-brimmed hat and sunglasses. About 20 people and a helicopter are looking for Heng.