Thorn finished tightening a wing strut, then stood back. A black, ultralight, barely more than an engine, a pair of seats, and triangular wings, stood in the middle of the street. Two more of the tiny aircraft were set up down the block. "Here’s where we see if this idea’s worth diddly. You ready?" She nodded, and moved over to her own plane. Let’s do it, people," Thorn called out. "Keep your heads up! This is where the rough part starts."