170921-N-OA516-0027 MAYPORT, Fla. (Sept. 21, 2017) Sailors aboard the amphibious assault ship USS Iwo Jima (LHD 7) take the September 2017 Navy-wide E-4 advancement exam on the ship’s mess decks. Iwo Jima returned to homeport after recently completing initial humanitarian relief efforts following Hurricane Irma’s landfall in Key West, Florida. (U.S. Navy photo by Mass Communication Specialist 3rd Class Kevin Leitner/Released)