World War II pilot Walter "Pat" Hollywood, a longtime Arcadia resident, celebrated Veterans Day and his 90th birthday yesterday. He was born in Pasadena in 1919 and served as an Army C-46 Commando pilot during World War II. He works out at the Fortanesce and Associates Physical Therapy and Sports Medicine Center in Arcadia and walks for an hour at the Los Angeles County Arboretum every day.