shotspotter in this scenario was essential. oh, absolutely, there is no _ was essential. oh, absolutely, there is no doubt _ was essential. oh, absolutely, there is no doubt in _ was essential. oh, absolutely, there is no doubt in any - was essential. oh, absolutely, there is no doubt in any of- was essential. oh, absolutely, there is no doubt in any of our| there is no doubt in any of our minds that additional lives would have been at risk or lost if we had not apprehended him as quickly as we did. shotspotter is the reason why we were able to apprehend him and stop the killing spree. there are clearly examples of shotspotter system working, even saving lives. and for years it has been used by police forces pretty and controversially. that was until lawyers around the country started to ask questions, difficult questions, about how the attack actually works. they started wondering whether it is as accurate as the company claims and if it isn't, what the consequences are for americanjustice, and those american justice, and those questions americanjustice, and those questions have been loudest here in the city of chicago. took me through, where are the actual shotspotter sensors here? :, , ., , ., here? the round ball being, a black thing — here? the round ball being, a black thing at _ here? the round ball being, a black thing at the _ here? the round ball being, a black thing at the very - here? the round ball being, a black thing at the very top, i black thing at the very top, thatis black thing at the very top, that is the centre up there.