Northwest Airlines Cargo, which is no longer operating, conspired to fix air-cargo rates from July 2004 to February 2006, the department added.

司法部补充说在2004年7月至2006年2月间西北空货（Northwest Airlines Cargo，现在不再运作）策划了空货限阶。

youdao

From its new headquarters in Yemen AQAP has made serious efforts to attack the United States, sending the "underwear bomber" to blow up Northwest Flight 253 over Detroit on Christmas Day 2009 and also smuggling bombs on to U.S.-bound cargo shipments in October 2010.

CNN: Should we still fear al Qaeda?