A honk. The purr of the engine. Clang. Bounce. Red and green lights. "... If the mailings are secure, you have the Ship's permission. Do whatever you like." Expendable. Parr put the comset in his coat pocket and cowered into the seat. "Turn right!" he said suddenly to the driver. "Now ... now.... Right again!" He bounced. He closed his eyes, resting them. "Out Hill," he said wearily without opening his eyes. He withstood an irritated mental assault. They were tiring. But not as fast as he was. The silent pursuit: three cars out of the multitudes, doggedly twisting and turning through the Los Angeles streets—separated by blocks, even by miles, but bound by an unseen thread that was unbreakable. "I gotta eat, buddy." Parr drew himself erect. "A phone! Take me to a phone!" The taxi ground to a stop in a service station. Nervously, Parr began to phone airports. Three quarters of his mind was on his pursuers. On the third try he got promise of an immediate private plane. "Have it ready!" he ordered. Then, dropping the receiver he ran from the station to the cab. He jockeyed for nearly thirty minutes for position. Then he commanded the driver to abandon the intricate inter-weaving and head directly for the airport in Santa Monica. Shortly, the two other cars swung in line, down Wilshire. The job of softening up Earth for the invasion began to pass entirely from the hands of the advancemen. From a ticklish, dangerous proposition at first to a virtual certain mailing day. The world wide mechanism of delivery swung into operation from time zone to time zone, and, in the scheme of conquest the advancemen passed