A Pacific Partnership 2013 preventative medicine team checks the oxygen levels in a water sample taken from a pond at the Milkfish Fishery. 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. (U.S. Navy photo by Mass Communication Specialist 2nd Class Laurie Dexter/Released)