The Array consisted of two planar generators positioned parallel to one another. A starship would be parked with the generators to its port and starboard, and the sweep was conducted between the generators. Typically, it progressed from the stern to the bow of a starship. While the sweep was underway, all living biological material, including the crew, was evacuated to the planet. The Array was large enough to accommodate a Galaxy-class starship, but the distance between the two generators could be adjusted to fit a smaller ship.