Runway could be used for military purposes, US think tank says Johnson South Reef features a small port and two helipads. China has nearly finished building an airstrip that could be used for military purposes on one of its biggest artificial islands in the disputed South China Sea, according to satellite images released by a US think tank yesterday. The Centre for Strategic and International Studies (CSIS) said images taken on June 28 by DigitalGlobe showed China had almost completed the construction of a 3,000-metre airstrip at Fiery Cross Reef, which China calls Yongshu Reef. The defence ministry refused to...