Then he pulled an envelope from an inside pocket, handed it to Rossel. It was a thick, official-looking thing and Rossel hefted it idly. He was about to ask again what was it all about when the airlock of the hovering ship swung open creakily. A beefy, black-haired young man appeared unsteadily in the doorway, called to Dylan. "C'n I go now, Jim?" Dylan turned and nodded. "Be back for you tonight," the young man called, and then, grinning, he yelled "Catch" and tossed down a bottle. The captain caught it and put it unconcernedly into his pocket while Rossel stared in disgust. A moment later the airlock closed and the ship prepared to lift. "Was he drunk?" Rossel began angrily. "Was that a bottle of liquor?" The soldier was looking at him calmly, coldly. He indicated the envelope in Rossel's hand. "You'd better read that and get moving. We haven't much time." He turned and walked toward the buildings and Rossel had to follow. As Rossel drew near the walls the watchers could see his lips moving but could not hear him. Just then the ship lifted and they turned to watch that, and followed it upward, red spark-tailed, into the gray spongy clouds and the cold. After a while the ship went out of sight, and nobody ever saw it again. The first contact Man had ever had with an intelligent alien race occurred out on the perimeter in a small quiet place a long way from home. Late in the year 2360--the exact date remains unknown--an alien force attacked and destroyed the colony at Lupus V. The wreckage and the dead were found by a mailship which flashed off screaming for the army. When the army came it found this: Of the seventy registered colonists, thirty-one were dead. The rest, including some women and children, were missing. All technical equipment, all radios, guns, machines, even books, were also missing. The buildings had been burned, so were the bodies. Apparently the aliens had a heat ray. What else they had, nobody knew. After a few days of walking around in the ash, one soldier finally stumbled on something. For security reasons, there was a detonator in one of the main buildings. In case of enemy attack, Security had provided a bomb to be buried in the center of each colony, because it was important to blow a whole village to hell and gone rather than let a hostile alien learn