Which unique supply chain strategy was implemented during the transportation of the James Webb Space Telescope's primary mirror segments?

The James Webb Space Telescope (JWST) represents one of the most complex supply chain challenges in astronomy history. From manufacturing components across multiple countries to its final deployment in space, the JWST supply chain involved unprecedented coordination. This poll tests your knowledge about the logistics behind getting this revolutionary observatory from Earth to its observation point.

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They were transported separately via specialized temperature-controlled vehicles that maintained a constant -240°C environment
They were shipped together in a custom nitrogen-purged container to prevent molecular contamination during transit
Each segment was hand-carried by a dedicated engineer in a specialized briefcase on commercial flights
They were transported via submarine to avoid vibrations that could occur during land or air transport