 What is Prantera referring to when he mentions a 'pressure cooker'?
A gun is an interesting weapon; it can be hired, of course, and naturally doesn't care who hires it. Something much the same can be said of the gunman, too.... The evening was dark, it was unlikely that the other even saw the circle of steel that was the mouth of the shotgun barrel, now resting on the car's window ledge. And at that moment, the universe caved inward upon Joseph Marie Prantera. A door slid open in the wall in a way that Joe had never seen a door operate before. The other spoke precisely and slowly, the way a highly educated man speaks a language which he reads and writes fluently but has little occasion to practice vocally. Reston-Farrell said, "I am afraid, Mr. Salviati-Prantera, that these are the only garments available. Reston-Farrell said compassionately, "Try this, it's excellent cognac." Reston-Farrell, the one Joe had already met, was tall and drawn of face and with a chainsmoker's nervousness. He wondered, all over again, if this was some kind of pressure cooker. He said gently, "I think it would be Mr. Joseph Prantera, wouldn't it? Whatever the something else was, a slot opened in the middle of the table and a glass, so clear of texture as to be all but invisible, was elevated. Warren Brett-James said soothingly, "Prepare yourself for somewhat of a shock, Mr. Prantera. Brett-James said gently, "Hardly for one hundred and seventy years, Mr. Prantera." Joe Prantera's mind suddenly reverted to those last memories and his eyes narrowed dangerously. Reston-Farrell said, "Mr. Prantera, we have brought you from your era to perform a task for us." The two men of the future said nothing more for long minutes while Joe Prantera's mind whirled its confusion. "That is why we brought you here, Mr. Prantera. Brett-James said, "Mr. Prantera, there are no professional assassins in this age, nor have there been for over a century and a half." Joe Prantera's irritation over this whole complicated mess was growing. Then, his back turned, he said, "We have tried, but it is simply not in us, Mr. Prantera." The second industrial revolution was accompanied by revolutionary changes in almost every field, certainly in every science. Your ancestors found, Mr. Prantera, that it is difficult for a man to be free so long as others are still enslaved.
 a mental asylum
 a courtroom  an interrogation room  a mental asylum  a set-up