MACHAIS — Healthy Acadia invites the community to a Buoy Up to Cancer “Tree of Hope” ceremony on Saturday, June 4 at 10 a.m. at the Machias public boat landing, adjacent to Helen’s Restaurant on U.S. 1. The event marks the end of a six-month awareness-building and fundraising campaign to honor and remember loved ones, patients, caregivers, family, and friends whose lives have been touched by cancer, and to support the Downeast Cancer Patient Navigation Program. The Buoy Up to Cancer campaign kicked off in early December.