US authorities scrambled fighter jets above American cities as a precaution, but federal investigators said there was no evidence of terrorism in the crash, which happened during foggy conditions around3 pm.
英
美
- 美國當局數駕戰斗機緊急起飛，在美國各城市上空以備不測，但聯(lián)邦調查員稱(chēng)，這次墜機沒(méi)有恐怖行動(dòng)的跡象，飛機是下午3點(diǎn)左右在大霧彌漫的情況下墜毀的。
