Eagle City’s plan to turn the Sea of Tranquility into a true waterway on Luna hinged on gravplating and energy shielding. They needed gravplates to keep the water in place and make a comfortable one gee boating and walking environment. They needed the energy shielding to protect the Lunar surface from Solar radiation and make it safe to walk beneath the stars. Mass production of those two technologies created entirely new industries on Earth and beyond, perfected them for both military and civilian deployment, and allowed Eagle City to expand the new sea as a visible proof of what we could build when we wanted to. One cannot underestimate how much the Sea of Tranquility Project did to change life in the stars for all of us. It showed us that we could create new life on even the most inhospitable worlds, and that was a game changer.