Phoenix PD has a backlog of more than 750 untested sex assault DNA kits, and that number is expected to grow. ABC15's Zach Crenshaw shares what the department and national experts say about the "concerning" trend. #PhoenixPD #PhoenixPolice #DNA #DNAevidence #DNAevidencebacklog #DNAkits #Arizona #ABC15 #LocalInvestigations __________________   ABC15 Arizona in Phoenix is your source for local breaking news, in-depth investigations, the latest weather and traffic, and continuous live video.   Subscribe to the ABC15 YouTube channel: bit.ly/3zqfyF0   Watch 24/7 ABC15 live coverage here: abc15.com/live   Download the ABC15 app: abc15.com/apps   Watch more ABC15 on YouTube: Latest ABC15 investigations: bit.ly/3NjEEed Uplifting Arizona-Good news in Arizona: bit.ly/3U8RqhM Your Voice Your Vote-Full Arizona election coverage: bit.ly/3sLsktC