Iraqi security forces were placed on high alert and American aircraft —unpiloted reconnaissance drones flying low, and fighter jets roaring high above —crossed the capital.
伊拉克安全部队处于高警戒状态，美国
军
上穿梭，无人驾驶侦察机低飞行，战斗喷气机高呼啸。
Iraqi security forces were placed on high alert and American aircraft —unpiloted reconnaissance drones flying low, and fighter jets roaring high above —crossed the capital.
伊拉克安全部队处于高警戒状态，美国军上穿梭，无人驾驶侦察机低飞行，战斗喷气机高呼啸。
In addition, the USAF continues to fund development work of the Aerojet (formerly Atlantic Research) Variable Flow Ducted Rocket ramjet system as a future propulsion option for an extended range AAM.
此外，美国军继续投资于
喷气研究所（原来的大西洋研究所）的可变喷流管火箭发动机系统，将其作为增程
的未来推进选项。
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