The SAC 2 is carried by SFr Asmodeus.
FS1 Tech Room Description
What we have dubbed the Sac-2 is simply a more heavily armored form of the standard Shivan cargo container. We believe that this is where the Shivans keep their more precious supplies. Sac-2s are to be captured or destroyed at every opportunity.
FS2 Tech Room Description
The SAC 2 is a heavily armored variant of the standard Shivan cargo container. Equipment found in captured SAC 2s appears to be more fragile than that found in the more common SAC 3s. SAC 2 cargo containers are to be captured rather than destroyed at every opportunity. If the choice is between destruction and allowing the container to be recovered by Shivan forces, pilots are authorized to destroy the container.