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Walk-around of an air vane on the aft end of the aft unit.

Picture 4 of 4.

The aft unit remains attached to the warhead section after the booster burns out and the center section separates. The air vanes are part of the missile's guidance system, directing the warhead to its target.

Note the graduated scale on the counterfort at the aft end of the air vane.

This photo is exposed for the interior of the air vane.