the event, but would resume service over a few weeks to months. The principal difficulty would be the greatly increased need for these systems in the first few days after the event, when lifesaving activities would be paramount.
Portions of the San Francisco Bay Area and of the Los Angeles Area contain substantial concentrations of manufacturing capacity for guided missiles and space vehicles, semiconductors, aircraft parts, electronic computing equipment, and airframes. Their specific vulnerability to the postulated earthquakes was not analyzed. In the event of major damage, however, the long-term impacts may be mitigated somewhat by such measures as the use of underutilized capacity located elsewhere, substitution of capacity from other industries, imports, use of other products, and drawing-down of inventories.
Since we have not recently experienced a catastrophic earthquake in the United States, there are many unknowns which must be estimated with best judgment. This is true particularly for