“On the far side of the bay was the command station that controlled the door, which was currently semi-open. Rather than the normal closed maw of steel, there was a network of pulsing gold veins crisscrossing the gaping mouth of black - a nitrogen membrane keeping the molecular air contained and pressurized while allowing aircraft to pass through.” Force FieldsSpeculative Science FictionSpeculative TechnologySpace Ship Book:Drawing the Dragon Source: Drawing the Dragon