In 2053, Khan Noonien Singh and 84 augments captured an ISA-carrier-rocket with an unfinished but life-supporting DY-100 hull and launched into space in order to avoid being captured by enemy-troops. They headed for the DY-Facility and boarded it. There, Khan promised to leave the scientists alive if they would ready the Botany Bay for the augments. After destroying the com-systems of the facility, the Botany Bay left, keeping up to 72 augments alive in cryo-stasis for over 250 years.
When the scientists heard of the cease fire on Earth after managing to repair the com-systems, they abandoned the DY-Facility in two escape pods, leaving the DY-Facility adrift. Using automated course-correction systems and thanks to the position at the Lagrange-point the facility stayed largely intact until 2064, when it was reactivated by UESPA.
UESPA, the first real supranational space flight agency on Earth exists since 2064 and is still part of United Earth’s science program in the 24th century. It was founded by multiple states shortly after first contact with Vulcans, complying with their demands for a unified institution to explore space.
Zefram Cochrane had have plans for a warp 1.5 engine for at least half a year but barely managed to build the Phoenix on his own. When space suddenly became an important agenda again, UESPA asked Cochrane to fill in as head of the warp-development project. Governments of UESPA assumed that the Vulcans would gradually reconsider their reserved position and grant Earth more support, once humanity would make advances on its own.
So, Cochrane received all resources available. Equipping the DY-100-hull with a warp-propulsion-system and reinforcing its superstructure, the first experiment in upgrading a sub-light speed-vessel with ftl-technology utterly failed, when the (unmanned) DY-100-warp-prototype was torn to pieces by the subspace-forces. Cochrane revived his old 1.5 engine-plans and UESPA was able to build a new ship-type at DY-Facility, suited for warp-speeds.
Trying to prove that humanity was ready for interstellar exploration, S.S. Conestoga was supposed to be a colonisation-vessel. The Conestoga was supposed to transport about 200 colonists from all member states of the UESPA to Terra Nova, an M-class planet discovered only a couple of years ago. Combining all resources available and introducing the Scandinavian Federation and the Southern American Coalition into UESPA in 2066, the S.S. Conestoga was built in only three years. She was launched in 2067 and reached Terra Nova in 2078.
Building the Conestoga was a real challenge, compared to the S.S. Valiant and the S.S. Apollo, two much smaller crafts that were completed in 2065 and 2070. They were partially constructed salvaging a DY-100 superstructure. The Valiant was lost in the same year as it was launched, running into an instable wormhole. She was released from the anomaly right at the edge of the galaxy and directly into a magnetic storm, that casted her out of the galaxy.
The Apollo on the other side served within the solar system, providing efficient and reliable transport methods. Together with a bunch of four DY-100 vessels (altogether being the whole UESPA-fleet at that time), Apollo helped to expand Luna’s Colony New Berlin and Utopia Planitia.
As it became obvious that the DY-Facility could provide neither space nor resources to build enough vessels for the increasing need to build more ships, UESPA approved to begin planning to build a larger facility. Experts estimated that the McKinley construction facility, of which the Warp Five Complex would be a part much later, would be able to enter production around 2089.