170216-N-AW702-003 JACKSONVILLE, Fla. (Feb. 16, 2017) Heidi Murkoff, author of the "What to Expect When You're Expecting" book series of pregnancy guides, autographs one of her books for a Naval Hospital Jacksonville patient. Murkoff visited the Labor & Delivery and Maternal Infant Units, talking with patients and signing books as part of a USO tour. (U.S. Navy photo by Jacob Sippel/Released)