indicator. it's not designed to destroy property. still, the easy availability and potential for misuse triggered this bulletin four years ago. the fbi has identified multiple incidents where criminals and extremists have explored the possibility of employing the binary explosive picks mixture obtained from exploding targets to commit criminal ask troers acts. if the las vegas gunman had placed some of that material down at the street level and aimed at it with a scoped rifle. >> the binary explosives could have been detd natured with rifle slugs from those rifles, from the 32nd floor. one for the effect of creating chaos amongst the crowd and secondly, as a result of the explosion, widespread shrapnel raining on the crowd. >> the implications are