The Concordian military is only as effective as its supply chain allows it to be, and the C-15 Rock Dove aids greatly in that process. The hard Rock Dove is the most common of the various light shuttles used by the Concordian navy. While not a particularly glamorous vehicle, it does solid work transferring men and materials from orbit, or to and from the various bases established. A number have also been converted to serve as ambulances, as the powerful engines necessary to ferry heavy machinery also allow the C-15 to reach great speed very quickly, and the plating allowing it to survive reentry works well against small arms.