US Raises Terror Alert Level for All Flights

美国提高所有航班恐怖威胁警戒级别

The United States has raised its national security threat level for all commercial air flights and has barred passengers from carrying liquids aboard any planes. U.S. officials say a code-red alert imposed early Thursday is aimed at commercial traffic from Britain, with focus on flights by United Airlines, American Airlines and Continental Airlines. The liquids ban applies to all air travel in and out of the U.S. and includes beverages, hair gels and lotions. Baby formulas are exempt from the ban but will be examined.

The threat level for all other commercial flights to or from the United States was increased to code orange, indicating a high risk of attack. Homeland Security Director Michael Chertoff says there are no signs of plotting within the United States. But he said the plot uncovered in Britain was in its final planning stages.

Chertoff and FBI Director Robert Mueller said the plot has the earmarks of al-Qaida, but that no direct link has yet been established to the terrorist group.

美国提高了所有民用航班的安全威胁警戒级别，并禁止乘客携带任何液态物品登机。美国官员说，星期四早上宣布的红色警戒级别针对来自英国的航班，主要是由联航、美利坚航空以及大陆航空公司运营的航班。液态物品的禁令适用于所有出入美国的航班，被禁止的液态物品包括饮料、发胶以及护肤液等。婴儿配方奶不在禁令之内，但是需要接受检查。

来往于美国的其它商业航班的警戒级别也被提升到预示有高度恐怖袭击威胁的橙色。美国国土安全部部长切尔托夫说，目前还没有迹象显示美国国内有阴谋策划。但是他说，英国挫败的阴谋已经到了策划的最后阶段。

切尔托夫和美国联邦调查局局长米勒说，这次阴谋带有基地组织的特征，但是还没有找到将这个案子与基地恐怖组织联系起来的直接证据。