Mischief Reef
Subsequent to the Chinese occupation of Mischief Reef in the mid-1990s, a Philippine World War II-vintage naval landing craft, (LST 57 - "Sierra Madre"), was deliberately run aground on the Second Thomas Shoal in 1999 to maintain a Philippine naval outpost in the area; more than 15 years later it continues to be manned by about a dozen Philippine Marines.