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An important part of development is related to increasing by all possible
technical means the safety of all nuclear warheade and to incorporating various
innovations to assure against unauthorized or illegal use.
Weapons systems tests will provide much needed information on the weapon
aystem and effects in the environment in which the system will be used operationally.
Weapons effects measurements are urgently required in many areas to evalu*
™
hip.
ate the effectiveness of our weapons in different environments.
The areas of
principal uncertainty are the effects in the atmosphere, particularly at high
altitudes, which are pertinent to our missile defense, and to radio propagation
and radar blackout; to effects in the oceans which are pertinent to fleet operations and snti-submarine warfare efforts; and to effects on hardened underground
sites, including both biasct and electromagnetic pulses.
We know all too little
of effects of surfsce and subsurface burste on partially protected structures
and communications essential to effective command and control.
These data are
meeded to decrease the vulnerabliity of our missile systems and to increase the
understanding of the effects associated with the vulnerabilities of our missile
sites.
At the same time steps will be taken toward achieving a high degree of
kill probability on the enemy's delivery systems, insuring continuous communica-
tions and radar capabilities, and determining optimum employment tactics for
both fleet and land warfare.
Sufficient data are not available in all these
cases to be abie to make calculations with sufficient. reliability.
Also, because
additional considerations in the past three years have indicated more relevance
of some effects than originally believed in these areas, there is a serious
deficiency in data.
Furthermore, it is highly probable, as history has shown
repeatedly, that new kinds of pertinent effects of great military significance
may be discovered.
Ses
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