Red signal lights winked on, on the white walls that surrounded the tiers of bunks there in the belly of the Sun Child . Tension sharpened. Crap and card games broke up. Last-minute checking of gear and weapons was dropped, as five hundred men of the Survey Service climbed into their bunks for the deceleration. This would be only the second time that Terrans, surging out to colonize the planets, had reached Mercury, the Paradox World. As he pocketed the cards, there was only a brief flicker in F