evidence: Johns Hopkins Hospital also studied trauma outcomes and found that the fatality rate for patients with gunshot wounds nearly doubled from 9.5 percent between 2000 and 2003 to 18.3 percent for the period through March 2005. [...] On the streets in a number of cities, gunmen have increasingly aimed for the head. The number of fatal head shots in Milwaukee doubled in 2015 over the year before, and gunshot victims with three to seven bullet wounds jumped 150 percent. [...] Again, they found that gunshot victims stood out for falling behind. Their fatality rate jumped 6 percent — every two years.