Helicopter control officer Lt. j.g. Vincent Tes supervises sailors on the flight deck aboard guided-missile destroyer USS Halsey (DDG 97) during an out to sea training evolution as a part of Koa Kai 14-1. Koa Kai is a semiannual exercise that improves cooperation, readiness and the capability of forces to respond quickly to various crises, ranging from armed conflict to humanitarian assistance. (Mass Communication Specialist 3rd Class Johans Chavarro/RELEASED)