(Reuters) - A family of four rescued from their sailboat after their infant daughter became seriously ill at sea returned safely to San Diego on Wednesday aboard a U.S. warship that picked them up in the Pacific over the weekend, a Navy spokeswoman said. The parents, Eric and Charlotte Kaufman, and their two daughters, 3-year-old Cora and 1-year-old Lyra, left the Navy frigate Vandegrift after the ship arrived in port around 10 a.m. local time and proceeded to their family doctor, according to Lieutenant Lenaya Rotklein of the Third Fleet. Rotklein declined to give any further information about the arrival...