Dr. Abi Collinson, a veterinarian volunteering with the nongovernmental organization World Vets, performs surgery on a dog while U.S. Air Force Capt. Kelvin Bush looks on during a Pacific Partnership 2013 sterilization and wellness clinic. Working at the invitation of each host nation, U.S. Navy forces are joined by non-governmental organizations and regional partners that include Australia, Canada, Colombia, France, Japan, Malaysia, Singapore, South Korea and New Zealand to improve maritime security, conduct humanitarian assistance and strengthen disaster-response preparedness.