John and Denise Cross of Vacaville will remember this Christmas Eve as their family doubled in size from four to eight members. Denise Cross gave birth to healthy quadruplets--three boys and a girl--at the David Grant Medical Center at Travis Air Force Base. The children, named David, Daniel, Robert and Marinda, ranged in weight from Marinda's 3 pounds, 14 ounces, to David's 5 pounds, 3 ounces. They will join an older brother and sister at home. Gaylyne Shoemaker, a friend of the family who witnessed the Caesarean section births, said all four babies "were kicking and screaming."