美国海岸警卫队炮击击沉日本拖船
http://www.cnn.com/2012/04/06/us/japan-tsunami-ship/index.html?hpt=hp_c1
STORY HIGHLIGHTS
- The ship sunk in more than 6,000 feet of water, an official said
- The Coast Guard capsized it by opening fire on the roughly 200-foot trawler
- The trawler posed a threat to mariners and the marine environment
- The boat is part of a giant debris field making its way toward North America