진보적인 하이브리드 복합구조의 마스트인 Advanced Enclosed Mast-Sensor (AEM-S) System을 시험했던, 이제는 퇴역하여 DDX함의 연구에 시용되고 있는 미해군 구축함 USS Arthur W. Radford (DDG 968)의 특이한 모습입니다. 마지막사진이 변신전의 모습입니다.
이시스템의 개발목적은 기존 함정의 마스트에 비해 날씨의 영향을 덜 받으며 적의 레이더로부터 탐지율을 낮추고 센서들을 보호할 수 있어 유지관리비의 인하등을 고려한 복합구조물의 연구입니다.

The ship was the platform for extensive testing of the new mast by the Navy. The new, advanced composite mast, which the Navy described as "revolutionary and spectacular," was built and designed by an Integrated Product Team (IPT) -- known as "The AE MIS System Masters" -- made up of technical experts drawn from diverse Navy and industry activities nationwide. The AEM/S System is a 93' high, hexagonal structure, 35' in diameter, enclosing existing radars and providing important signature and other operational benefits. By enclosing major antennas and other sensitive equipment, the AEM/S System protects them from the weather. This reduces maintenance, as well as providing significantly reduced radar signature.