Saturday, November 7, 2009

The picture above shows one of the siren towers that made up Portland's attack warning system back in the 1950's. These sirens were to sound if Russian bombers carrying H-bombs were headed on a bombing mission to our city.

Below, a map shows the strategic placement of the 7 sirens throughout the city. Each circle radius is 10,000 feet or about 2 miles.

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