"You got me!" I shrugged hopelessly. "However, since we have nothing else to go on but the locale from which the children vanished, my suggestion would be to send you there." "Mars, you mean," I said. "No, to the spaceship _Phobos II_. The one they were returning to Earth in when they disappeared." "They disappeared from a spaceship? While in space?" Baxter nodded. "But that's impossible," I said, shaking my head against this disconcerting thought. "Yes," said Baxter. "That's what bothers me." _Phobos II_, for obvious reasons, was berthed in a Top Security spaceport. Even so, they'd shuttled it into a hangar, safe from the eyes of even their own men, and as a final touch had hidden the ship's nameplate beneath magnetic repair-plates. I had a metal disk--bronze and red, the Security colors--insigniaed by Baxter and counterembossed with the President's special device, a small globe surmounted by clasping hands. It gave me authority to do anything. With such an identification disc, I could go to Times Square and start machine gunning the passers-by, and not one of New York's finest would raise a hand to stop me. And, snugly enholstered, I carried a collapser, the restricted weapon given only to Security Agents, so deadly was its molecule-disrupting beam. Baxter had spent a tremulous hour showing me how to use the weapon, and especially how to turn the beam off. I'd finally gotten the hang of it, though not before half his kidney-shaped desk had flashed into nothingness, along with a good-sized swath of carpeting and six inches of concrete floor. His parting injunction had been. "Be careful, Delvin, huh?"