The DEF-H module contains the Diesel Exhaust Fluid for the truck. | Hacker News

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		jollyllama on Sept 26, 2023 \| parent \| context \| favorite \| on: The SR-71 Blackbird Astro-Nav System worked by tra... The DEF-H module contains the Diesel Exhaust Fluid for the truck.

libertyhouse on Sept 26, 2023 [–]

Not sure you are were trying to be serious or not, but the DEF-H was one of the defensive systems used to jam surface to air threats. The system had two "modules" with one in the left and one in the right chine.

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