描述：周四拂晓之前，美国海军陆战队士兵登上直升机，准备对阿富汗赫尔曼德省发动夜间空中突袭。本次进攻于当地时间凌晨1点过后开始。

Caption: U. S. Marines boarded helicopters for a night air assault in Afghanistan's Helmand province early Thursday. The offensive began shortly after 1 a. m. local time.

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警方于拂晓时发动了突袭。

The attack started at dawn.

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警方于拂晓时发动了突袭。

The commandos attacked the outpost at dawn.

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