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is3_88 - Unit 4 Nuclear Threat In this unit you will learn...

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4-1 Unit 4 Nuclear Threat In this unit you will learn: O Nuclear weapon detonation characteristics and effects O Protective measures against effects O Exposure rate determination after a detonation INTRODUCTION The end of the cold war and the dissolution of the Soviet empire has changed, not eliminated, the nuclear threat to the United States. Other countries who previously had the weapons but did not have weapon delivery vehicles able to reach the United States now have the ability to do so. Improvised nuclear devices (IND) or radioactive disperson devices (RRD) (radioactive material placed inside a conventional explosive device) are becoming increasingly possible. These IND weapons are within a terrorist’s ability to employ. The threat of a terrorist using weapons of mass destruction is increasing. A critical priority for the United States is to stem the proliferation of nuclear weapons and their delivery systems. Efforts are being made to account for and control all existing nuclear weapons and radioactive material worldwide.
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