The U.S. Naval Ship Mercy (T-AH 19) sets sail for its next port visit after a four-week stay in the Philippines. Mercy is a hospital ship able to rapidly respond to a range of situations on short notice and capable of supporting medical and humanitarian assistance needs with special medical equipment and a multi-specialized medical team, providing a range of services ashore as well as onboard. (U.S. Navy photo/PHC Edward Martens)