A US Navy (USN) Aircraft Handling Officer aboard the Guided Missile Cruiser USS YORKTOWN (CG 48) signals as an Mexican Navy MBB BO-105CB helicopter lands on deck during the 43rd annual UNITAS exercise. UNITAS is the largest multi-national naval exercise conducted with naval forces from the Caribbean Sea, South and Central America and the USN. The exercises focus on building multinational coalition while promoting hemispheric defense and mutual cooperation