Word: warheaded
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...Spartan's explosion. Within an area of a few miles, the X rays would penetrate the incoming warhead's heat shield, wreck its circuitry and defuse its trigger mechanism...
Some areas, including PAR sites that must be kept intact to maintain defenses, would also be protected by Sprints. These sharp-nosed, two-stage missiles, with a payload of a few kilotons (equal to thousands of tons of TNT instead of Spartan's millions), are aimed at warheads that have eluded Spartan. By this time the attacking vehicle has passed into the atmosphere and is traveling at about 18,000 miles per hour. To kill it before it explodes near the earth, Sprint must travel at fantastic speed. Its exact acceleration ability is secret, but the Army talks of Sprint...
...unintentional nuclear explosion in the U.S. since the birth of the atomic age. Even when nuclear bombers crashed, their weapons failed to detonate. Says one Pentagon official: "The only way to cause a nuclear explosion in an ABM silo would be to have a specialist climb in, rewire the warhead, getting around all those safety devices, and then bring in additional power. There are so many safety devices on it that we only hope it will go off once it is launched...
MIRV (multiple independent re-entry vehicle): the newest thing in offensive missiles, now under development by the U.S. It will be at least two years before models are operational. The main innovation is that each missile will be able to carry several separate nuclear warheads-as many as ten in the submarine-borne version, and three in the land-based model. Each warhead will be assigned to a different target. Thus, MIRV would increase the nuclear punch severalfold without escalating the number of delivery missiles...
...spend virtually an entire day with Prime Minister Harold Wilson, probably with time out for tea with Queen Elizabeth II at Buckingham Palace. One particular area of concern to Wilson is U.S. cooperation in advancing Britain's nuclear technology. The British would like to fit multiple-target nuclear warheads to their Polaris missiles, as the U.S. has already done with some of its intercontinental missiles. Since the U.S. is increasingly sensitive to French charges of favoring Britain with nuclear know-how that it denies to others, the British regard the warhead question as a key indicator of how freely...