Bound for Chicago from Zurich on the morning of May 8, the passengers of Swiss International Air Lines Flight 8 saw nothing amiss.

5月8日上午，在从苏黎世飞往芝加哥的客机上，乘坐瑞士国际航空公司第8次航班的乘客没有丝毫异样感觉。

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It is understood that the International Airport of Changsha yellow spring peak passenger and flight movements appear in the January 21, respectively, 3.6 million passengers and 357 vehicles.

据了解，长沙黄花国际机场春运旅客最高峰和航班起降架次出现在1月21日，分别为3.6万人次和357架次。

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Manzoor Hussain is among the hundreds of passengers who were able to leave on the first Pakistan International Airlines flight to the United Kingdom since Iceland's volcanic eruption last week.

VOA: standard.2010.04.23

"We ask that passengers follow the instructions of international security and flight crews, " the TSA said.

CNN: Security ramped up at airports in U.S., UK, Amsterdam

The rule prohibited passengers on international U.S.-bound flights from leaving their seats during the last hour of a flight, the sources said.

CNN: Canada limits carry-on baggage on flights into U.S.

However, if no air marshals are aboard (currently they are assigned to most international flights but only a small percentage of domestic flights), flight attendants and passengers are the first line of defense.

FORBES: A How-to, When-to Guide For Airplane Vigilantes