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The U.S. Air Force Emergency Notification Signals. Common Alarms and FPCON Levels. (U.S. Air Force photo illustration by Airman 1st Class Cory W. Bush/Released)


Common Alarms and FPCON Levels

The U.S. Air Force Emergency Notification Signals. Common Alarms and FPCON Levels. (U.S. Air Force photo illustration by Airman 1st Class Cory W. Bush/Released)

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