“…McCauley and Moskalenko briefly reviewed the literature since 9/11 and suggested that steady progress in this area is being made. This view has been echoed by others (Gill & Corner, 2017;Gruenewald, Chermak, & Freilich, 2013;Schuurman, 2018;Silke & Schmidt-Petersen, 2017;Stern, 2014;Taylor, 2014;Youngman, 2018), and there have been a number of studies published since 2014 that have applied empirical methods to examine realworld data, for example, via the collation and analysis of open source data (e.g. Corner & Gill, 2015;Ellis et al, 2016;Knight, Woodward, & Lancaster, 2017).…”