Satellite imagery of Subi Reef in the South China Sea taken September 3, 2015 clearly shows subgrading for a runway. At a width of approximately 60 meters, the subgrading could support a runway equal in width to that recently constructed by China at Fiery Cross Reef. The current extent of subgrading at Subi is approximately 2,200 meters, with obvious preparations for a longer span underway. As previously reported, the size and shape of China’s land fill at Subi could ultimately accommodate a runway 3,300 meters long, as well as a parallel taxiway like that at Fiery Cross. No laying of pavement is observed in the current imagery.