The Navy has decided to cancel its contract for the A-12 Stealth attack plane.

海军方面已决定取消购买a - 12隐形攻击机的合同。

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The Navy has decided to cancel its contract for the A-12 Stealth attack plane.

海军已经决定撤销A-12隐形攻击机的订购合同。

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Stealth technology is even more difficult to master because it relies on systems to hide the presence of the plane while equipping the pilot with enough information to attack an enemy.

隐形科技相比之下更难完全掌握，因其关键系统要可以在装载能获得足够信息的飞行员去攻击敌人时保证不暴露目标。

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The failed attack on the plane happened December twenty-fifth, Christmas Day.

VOA: special.2010.01.09

AeroVironment's remote-control attack plane may be small, but it represents a big shift taking place in the U.S. military: Today's defense robotics are more focused on killing and less dependent on humans than ever before.

FORBES: Magazine Article

Washington (CNN) -- A Senate committee began its assessment of intelligence reforms put in place after the September 11, 2001, terrorist attacks by focusing Wednesday on the alleged Christmas Day attack aboard a plane landing in Detroit, Michigan.

CNN: Senators hear testimony on alleged Christmas Day bomb plot

In other words, the odds of a successful attack with a model plane that would cause any significant damage appears to be pretty low.

FORBES: Even With Explosives, Model Planes Just Aren't That Dangerous