In a crisis, it’s the blood on the shelves of local hospitals and blood banks that helps victims of emergencies and disaster. Since more than 25 percent of the local blood supply comes from donors under age 25 who participate in school-based events, summer presents a real challenge. Four years ago, Lifeblood created Donor Fest with a goal of collecting at least 300 units—our community’s typical daily usage—in a single-day event.