Straining under the weight, he lifted it to knee height, then staggered a few paces and dropped the mass onto a pile.Senior Captain (Intelligence) Lo Prek stepped back to review his work. Only a large, twisted steel door remained. The Tahn officer had labored for hours clearing that door. Beyond it, he hoped, was the key to the puzzle he had been fitting together for more years than he cared to remember.He hesitated a few minutes as if afraid that he would be disappointed. Almost daintily, Prek wiped his face with a silk handkerchief, which he then returned to his uniform sleeve. For a Tahn, Prek was a tall man and painfully slender. His body was all angles of jutting bone topped by a long horselike face with small eyes set too far apart and a short nose that left him with an overly long upper lip.Prek undipped a small laser torch from his harness and began cutting through the door. Prek was not the kind of man who hummed to himself while he worked or who used a string of favorite obscenities when the task became momentarily difficult.