Davin risked a peek out the western window of his apartment. They were all slatted up, of course, with blackout cloth behind them; you had to move the heavy drapes aside to get a good look between the boards, and that meant taking a chance at being seen. Bug opticals were getting better; going outside without using the tunnels meant certain death now, and even the hint of motion in one of the tall buildings' windows risked bombardment with gouts of mineral acid.