Image: San Francisco Air Defense Sector
San_Francisco_Air_Defense_Sector.jpg (347 × 350 pixels, file size: 46 KB, MIME type: image/jpeg)
Description: Emblem of the USAF San Francisco Air Defense Sector (ADC)
Title: San Francisco Air Defense Sector
Credit: Scan of USAAF Patch
Author: United States Air Force
Permission: USGOV-PD
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
Image usage
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