170402-N-IP743-0143 JINHAE, Republic of Korea (April 2, 2017) Builder 2nd Class David Perryman, assigned to Underwater Construction Team (UCT) 2, holds a prism rod while taking a topographical survey at a Republic of Korea (ROK) Navy base in Jinhae, ROK, during exercise Foal Eagle 2017. The annual, bilateral training exercise is designed to enhance the readiness of U.S. and ROK forces and their ability to work together during a crisis. (U.S. Navy photo by Chief Mass Communication Specialist Brett Cote/Released)