Then another sound, one I’ve heard before, a fast-paced triple concussion. Ba-ba-bam, and my face and hands are flayed with fragments of pavement. I roll again, this time getting my hands and one knee underneath me, then, with a convulsion of all my major muscle groups, I fling myself to my feet. I’m dizzy and almost go sprawling again, but I manage to keep my balance just. An instant later I almost trip over a curb, but I turn the move into a stutter-step and cut hard to my right. Ba-ba-bam again, and a garbage container next to me turns into shrapnel. Another stutter-step, cut left, and I risk a look over my shoulder.