I turned, set the power pistol at full aperture, and poured it to the armored door. Searing heat reflected from the barrier, smoke boiled, metal melted and ran. Through the stink of burning steel, I smelled scorched hair--and felt heat rake the back of my neck and hands. Heavy was beaming me at wide aperture, but the range was just too far for a fast kill. The door sagged and fell in. I jumped through the glowing opening, hit the floor and rolled to damp out my smouldering coat. * * * * * I got to my feet. There was no time now to stop and feel the pain of my burns. They would expect me to go up--so I would go down. The Blue Tower covered four city blocks and was four hundred stories high. There was plenty of room in it for a man to lose himself. I ran along the corridor, found a continuous service belt and hopped on, lay flat, rode it through the slot. I came out into the light of the service corridor below, my gun ready, then down and around again. I saw no one. It took ten minutes to cover the eighteen floors down to the sub-basement. I rolled off the belt and looked around. The whole space was packed with automatics; the Blue Tower was a self-sufficient city in itself. I recognized generators, heat pumps, air plants. None of them were operating. The city services were all still functioning, apparently. What it would be like in another ten or twenty years of anarchy was anybody's guess. But when the city systems failed the Blue Tower could go on on its own. Glare panels lit the aisles dimly. I prowled along looking for an elevator bank. The first one I found indicated the car at the hundred-eightieth floor. I went on, found another indicating the twentieth. While I watched, the indicator moved, started down. I was getting ready to duck when it stopped at the fifth. I waited; it didn't move. I went around to the side of the bank, found the master switch. I went back, punched for the car. When the door whooshed open, I threw the switch. I had to work fast now. I stepped into the dark car, reached up and slid open the access panel in the top, then jumped, caught the edge and pulled myself up. The glare panels inside the shaft showed me the pony power pack on top of the car, used by repairmen and inspectors when the main power was off. I lit a per-match to read the fine print on the panel. I was in luck. It was a through car to the four-hundredth. I pushed a couple of buttons, and the car started up. I lay flat behind the machinery. As the car passed the third floor feet came into view; two men stood beyond the transparent door, guns in their hands, watching the car come up. They didn't see me. One of them thumbed the button frantically. The car kept going. There were men at almost every floor now. I went on up, passed the hundredth floor, the one-fiftieth, and kept going. I began to feel almost safe--for the moment. * * * * *