What trace is left by a crime that has not yet happened? Predictive forensics, the futurology of contemporary warfare, seeks to trace future crime in the analysis of historical patterns. Signature strikes that target unknown people are based on pattern-of-life recognition detected through signal intercepts, human sources or vertical surveillance. The specific patterns that the United States believes demonstrate the inclinations of individuals and groups to undertake militant action is kept secret, but certainly involve forms of gathering and movement within areas or roads defined as “toxic.” Hunted by semi-robotic platforms, militant groups can and do learn how to adapt to these deadly pattern recognition algorithms and camouflage their actions accordingly. Militant groups and the pattern recognition algorithms that track their tracks are thus in a constant and mutual state of recalibration and coevolution.