produced and edited by Jon Nealon ; produced and reported by Erika Kinetz ; produced & directed in Ukraine by Thomas Jennings, Annie Wong ; a Frontline production with the Associated Press, SITU Research and 2over10 Media. After zero tolerance / written, produced and directed by Oscar Guerra Nunez ; a Frontline production with Five O'Clock Films
directed by Annie Wong, Thomas Jennings ; narrated by Will Lyman ; produced by Erika Kinetz, Annie Wong, Thomas Jennings, WGBH Educational Foundation, Associated Press, 2over10 Media