One of these buildings sported a five-story parking ramp with a flat roof. That was where the drones all came to rest, landing one at a time, each folding up and rolling out of the way to make room for the next. There were more big umbrellas and choreographed movements that conducted Saskia and the others into one of the adjoining office buildings. They were ushered through the doors and past a range of security checkpoints into the offices of White Label Industries LLC, whose logo was a featureless white rectangle.