The two US Navy destroyers involved in deadly collisions in the Pacific this summer both had lengthy records of failure to fulfill key training requirements, according to Government Accountability Office data provided to Congress and obtained by CNN.
원문출처 : http://www.cnn.com/2017/09/11/politics/navy-ships-training-expired/index.html
원문출처 : http://www.cnn.com/2017/09/11/politics/navy-ships-training-expired/index.html