When colonists returned to resettle Alluvion in 2554, they discovered a series of Forerunner shield pylons that had emerged and were holding back the Sundark Sea. After several years of investigation, they found a fuel material that had the potential to be more powerful than deuterium.
In 2556, Liang Dortmund's aerospace division was given the contract to extract and test this material. Thus, ARC was created. Liang Dortmund created several space shuttles that were powered from this material.