Volunteer Ruth Buis puts a crochet hat on 3-day-old Madalyn Weber while mom, Allyson Weber, looks on. Buis and other volunteers made the hats as part of the American Heart Association's Little Hats, Big Hearts program, which raises awareness about heart disease, the No. 1 killer of Americans, and congenital heart defects, the most common type of birth defect in the country. Scott Roberson / Daily Journal