Memorial Day represents the unofficial start of summer, and for the American Red Cross it also brings a drop in blood donations. More people take vacations during the summer, and forget to give blood. That means the blood supply can get dangerously low.The folks at the Red Cross say they hope everyone will step forward, but they especially need donors with type O-negative blood.Trudy Darling, Account Executive for the Red Cross says it’s considered the universal blood type. “Type O negative we use for trauma victims, for newborn babies for premature babies because they’re being tested. Obviously their blood hasn’t been typed yet, so we have to use type O negative. Plus, type O neg can only receive type O neg. So if you are type O neg, please consider coming into the American Red Cross Donor Center and give your gift of life as soon as possible.”If you’d like to give blood, call 1-800-Give Life to schedule an appointment.The Bangor Donor Center at 900-B Hammond street is open Tuesday through Thursday 11:00 AM – 6:00 PM, Friday 8:00 AM – 2:00 PM, and every 1st and 3rd Saturday.