Sen. Chuck Grassley has released graphic new police bodycam video from the rooftop where the gunman involved in the assassination attempt of former President Trump was positioned. It comes as Secret Service director Kimberly Cheatle made the decision to resign from the agency, one day after appearing on Capitol Hill and admitting to security failures surrounding the shooting. NBC’s Ryan Nobles reports for TODAY. Warning: The video may be disturbing. » Subscribe to TODAY: youtube.com/@TODAY About: 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:...