Starbase 621, known as Heimdall Station, is a Stardock Class base which proudly serves as part of Obsidian Fleet's Task Force 72-B during the year 2396. It is situated on the Federation Frontier at the crossroads of the Breen Confederacy and Cardassian Union at the doorstep of the Tzenkethi Coalition. All four powers have been at war with at least one or two of the other members at some point in the last two decades. Heimdall Station acts as both the Gatekeeper into the Federation and also the beacon of light to show what the Federation is. Heimdall Station's mission is to project a stabilizing force onto the region, facilitate colonial stabilization, facilitate trade, act as a staging ground for humanitarian efforts, and to create new diplomatic ties in the region.