U.S. Army Capt. Rebecca Carden (left), a veterinarian with South Plains Veterinary Services, Fort Sam Houston, Texas, embarked aboard the multipurpose amphibious assault ship USS Iwo Jima (LHD 7) vaccinates a chicken during a veterinary mission in Puerto Barrios, Guatemala, on Sept. 8, 2010. The ship supported Continuing Promise 2010, a humanitarian civic assistance mission.