Prime Minister Hwang Kyo-ahn (far L, front) tours the 7,600-ton Aegis destroyer, the Seoae Ryu Seong-ryong, at the new civilian-military naval base on Jeju Island on Feb. 26, 2016, after attending a ceremony marking the base's launch, in this photo released by the Navy. The base opened 23 years after it was first initiated to serve as docks for warships and cruise ships and to host forces to quickly respond to any hostile activities in nearby waters. The base construction has been opposed for years by local residents and activist groups who cite environmental damage and the buildup of regional military tensions.