Police use of deadly force is undeniably one of the most serious of all governmental acts. That said, this action is legally permissible in the United States in order to save a life, including that of an officer or innocent bystander. Until recently, it was not possible to determine the number of officer-involved shootings (OIS) that occur each year in the United States. Thanks to the Washington Post, three years of data now exist that show police fatally shoot approximately 1,000 people each year. Other data sets have recently come into existence, including the OIS Data Collection Initiative by the Police Foundation and the Major Cities Chiefs Association (featured in the May 2018 Police Chief), as well as those by other media outlets and crowdsourced websites (e.g., The Guardian, killedbypolice.net, and fatalencounters.org). These projects have generated data sets that suggest similar totals, with each data collection method having its particular strengths and limitations. While these data are critically important, they are limited to fatalities and provide no insight about “suicide-by-cop”; shootings that produce nonfatal injuries; misses; or situations in which officers could have fired a weapon but chose not to. Nevertheless, the data still provide a helpful numerator (total number of fatal police shootings) that was previously unknown. The challenge, then, is making sense of this numerator. In other words, what is the appropriate denominator?