. >> narrator: ian adams is the head of utah's fraternal order of police. a we collected with him and asked about the trends we were seeing. adams said that it's difficult to evaluate trends with data that only tracks police shootings, without comparing them to all encounters with police, even the ones that don't end in violence, information he conceded isn't availablen the state. >> the data around these things is so incredibly bad. >> mm-hmm. >> and that's a national problem. it's not a utah problem, but we don't have good single-source reporting, like across a whole lot of criminal justice outcomes, including police use of force. so, i don't know, and nobody does. nobody knows, nobody can tell you what drives, specifically, police shootings. we know that it's some combination of, there are crime effects. >> mm-hmm. >> but a lot of it's driven through contact, right? like, the number of contacts that officers have with the public. >> narrator: he also said the number of officers involved in multiple shootings doesn't necessarily indicate a problem. >> in y