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The solid state electrical components of some aircraft and of some motors of modern autos, trucks, and tractors may be put out of commission. Metal bodies give some protection, whereas plastic bodies give little. The usual means of protecting electrical equipment against surges of current produced by lightning are generally ineffective against EM P. The protective measures are known, but to date all too few civilian installations have been protected against EMP effects. Three or four nuclear weapons skillfully spaced and detonated at high altitudes over the United States would produce EMP effects that might knock out most public power, most radio and TV broadcasting stations lacking special protection against these effects, and most radios connected to long antennas.

Furthermore, this computer-drawn map made at Oak Ridge National Laboratory does not indicate the very dangerous fallout near the isolated surface bursts. Although the most dangerous fallout would be carried by highaltitude winds that usually blow from west to east, such simplified fallout patterns as those shown should be used only as rough guides to help improve chances of evacuating a probable blast area or very heavy fallout area and going to a less dangerous area. Wind directions are undependable; an enemy's targeting can be unexpected; weapons can miss.

In 1990 almost all large missiles have several Multiple Independently-targetted Reentry Vehicles (MIRVed) warheads. S. S. command and control facilities, airport runways longer than 7,000 feet, major seaports, and the factories and refineries that are the basis of our military power. S. ) How should your plans either to evacuate during a worsening crisis, or to remain in your home area, be influenced by the dramatic changes inthe Soviet nuclear arsenal? Some of these changes are indicated by Fig.