BANGOR – The American Red Cross will give away a $40 gas card to a blood donor every day until the end of May as blood supplies are low. All presenting donors also can win two tickets on the cruise boat Patience. The Bangor donor center is at 900B Hammond St. The center is open 11 a.m.-6 p.m. Tuesday through Thursday and 8 a.m.-2 p.m. Friday and Saturday. Call 941-2900 for information.