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Detail of the steel engine mount pad located at the 10:00 position on the center unit.

Picture 1 of 4.

This view shows some of the steel pad itself, as well as a threaded hole for some sort of plug.

The plate to which the "NASM" tag is connected is a pneumatic connector. Tubing from the multiple pneumatic coupling balcony was held in place by the bracket on their way to other missile systems.