ELLSWORTH, Maine — Dan Sullivan has been leading the Ellsworth Memorial Day parade for the past 25 years and though he and many members of his Veterans of Foreign Wars chapter are getting older, they have no plans to stop marching. They could be relaxing at home or enjoying some good eats at a barbecue, but Sullivan and the small group of veterans from the local VFW post feel a duty to march year after year to ensure their fallen comrades are remembered.