Jury selection is set to begin in Illinois in the murder trial of a now-former deputy charged with killing 36-year-old Sonya Massey after she called 911 for help. Body camera videos will play a pivotal role, showing the moment then-Sangamon County Deputy Sean Grayson shot Massey, later saying in court motions that he feared for his life. NBC’s Maggie Vespa reports for TODAY. Warning: Some of the video is disturbing. » Subscribe to TODAY: youtube.com/@TODAY TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: today.com Find TODAY on Facebook: facebook.com/today Follow TODAY on Twitter: twitter.com/TODAYshow Follow TOD...