Footage posted to Chinese social media this week has captured rare glimpses of a Chinese aircraft carrier conducting operational drills in the South China Sea—while a U.S. Navy destroyer watches from afar. The military vessel is most likely a U.S. Navy Arleigh Burke-class destroyer, maritime experts told Newsweek on Wednesday. Dr. Collin Koh, a Research Fellow at RSIS, noted the class’s distinct mast, which is raked backward and can be seen in the silhouette in the distance.