Next day there was a general increase in hours. Girls under eighteen went on a fourteen-hour shift. Eighteen to thirty-five, they worked sixteen hours. Under the age of fourteen, none was allowed to work more than ten hours, but girls and boys of eight and nine could volunteer to work seven hours. Their shifts called for six. The age for admittance at the Centers was lowered to ten. The age to go out was seventeen, but, as the new classes came along, would be lowered to sixteen and fifteen. The strike came on New Year's Eve. There was ample warning. Word reached Earth before daylight that a major break-through had occurred. The Fourth Sector couldn't halt it, but forces were being drawn back from Three and Two to close the break. The news was tempered with assurances issued on a global scale by the Supreme Council. It said that their labors and sacrifices had not been in vain; that thousands upon thousands of Earth warships still stood between the planet and the onrushing enemy. It said that the stations on Mars and the Moons of Jupiter were still intact, as well as on Earth's Moon, and that hundreds of man-made stations were beyond the orbit of Saturn. The day was one of feverish excitement and at every opportunity fearful eyes turned toward the blue and seemingly placid heavens. Calculations of when the first blow would come were checked and rechecked. It was expected soon after evening twilight. News of expressions of confidence among the Upper Councils of the peoples of the planet were bulletined to still unrest. The Orientals could put aloft better than ten thousand ships in the last hours. The Europeans could do about the same. The Africans had a new ship not intended for service until further tests had been made, but which would be used to meet the emergency. North and South America had more ships than crews, and Arabian boys were being sent to man them. Sue couldn't understand how her mother could take the news so calmly. "I've lived through strikes before," she explained. "Besides, your father always comes home to make sure I'm all right afterwards." As the sun went down and the first twilight appeared, streamers of fire became visible in the sky above. They crossed and re-crossed, endlessly, numbering tens of thousands, and resembled falling meteors. "I've never