When a Boeing jumbo jet appeared low over New York City last month flanked by a fighter plane, terrified citizens in the streets below feared there was a repeat of 911.

• 上个月，当一架侧翼伴有战斗机的波音客机在纽约市上空低空飞行时，吓坏了街上的公民，他们担心这又是一次911事件。