The Philippine Navy frigates BRP "Gregorio del Pilar" (PF-15), left, and BRP "Ramon Alcaraz" (PF-16), right, are underway with the U.S. Navy "Arleigh Burke"-class destroyer USS "John S. McCain" (DDG-56) during Cooperation Afloat Readiness and Training (CARAT) Philippines 2014. In its 20th year, CARAT is an annual, bilateral exercise series with the U.S. Navy, U.S. Marine Corps and the armed forces of nine partner nations.