U.S. Defense Secretary Ash Carter tours West Sea Protection Hall on Pyeongtaek Naval Base, South Korea, April 10, 2015. U.S. Defense Secretary Ash Carter tours West Sea Protection Hall on Pyeongtaek Naval Base, South Korea, April 10, 2015. SHARE IMAGE: Download Image: Full Size (0.63 MB) Tags: Photo Essays Photo By: VIRIN: 262771-F-CHK16-870.jpg Photo Gallery