Culebra Koa-15 (CK15) is a PACOM sponsored, U.S. Pacific Fleet led training exercise designed to demonstrate and increase joint proficiency in expeditionary operations. The exercise will feature Marines and Sailors operating in and around a mobile landing platform and joint high-speed vessel alongside traditional amphibious ships. The exercise will also serve as additional training for the USS Essex (LHD 2) Amphibious Ready Group (ARG) prior to deployment to the Western Pacific and Arabian Gulf. CK15 is conducted in conjunction with PALS 15.