The Robots did not attack the fire engines. Emboldened by this, firemen connected a hose and pumped a huge jet of water toward the Tugh house. The Robots then rushed it. One huge mechanism--some said it was twelve feet tall--ran heedlessly into the firemen's high-pressure stream, toppled backward from the force of the water and very strangely lay still. Killed? Rather, out of order: deranged: it was not human, to be killed. But it lay motionless, with the fire hose playing upon it. Then abruptly there was an explosion. The fallen Robot, with a deafening report and a puff of green flame, burst into flying metallic fragments like shrapnel. Nearby windows were broken from the violent explosion, and pieces of the flying metal were hurled a hundred feet or more. One huge chunk, evidently a plate of the thing's body, struck into the crowd two blocks away, and felled several people. At this smashing of one of the mechanisms, its brother Robots went for the first time into aggressive action. A hundred or more were pouring now from the vacant house of the absent Tugh.... * * * * * The alarm by ten o'clock had spread throughout the entire city. Police reserves were called out, and by midnight soldiers were being mobilized. Panics were starting everywhere. Millions of people crowded in on small Manhattan Island, in the heart of which was this strange enemy. Panics.... Yet human nature is very strange. Thousands of people started to leave Manhattan, but there were other thousands during that first skirmish who did their best to try and get to the neighborhood of Patton Place to see what was going on. They added greatly to the confusion. Traffic soon was stalled everywhere. Traffic officers, confused, frightened by the news which was bubbled at them from every side, gave wrong orders; accidents began to occur. And then, out of the growing confusion, came tangles, until, like a dammed stream, all the city mid-section was paralyzed. Vehicles were abandoned everywhere. Reports of what was happening on Patton Place grew more confused. The gathering nearby crowds impeded the police and firemen. The Robots, by ten o'clock, were using a single great beam of dull-red light. It was two or three feet broad. It came from a spluttering, hissing cylinder mounted on runners which the Robots dragged along the ground, and the beam was like that of a great red searchlight. It swung the length of Patton Place in both directions. It hissed against the houses; penetrated the open windows which now were all deserted; swept the front cornices of the roofs, where crowds of tenants and others were trying to hide. The red beam drove back the ones near the edge, except those who were stricken by its frigid blast and dropped like plummets into the street, where the Robots with flashing blades pounced upon them.