Two years have passed since a terrorist attack at Abbey Gate in Afghanistan took the lives of 13 U.S. service members and around 170 Afghan civilians. Throughout those two years, the Pentagon has asserted that the attack was unavoidable. But NewsNation has obtained Pentagon documents — including sworn statements from military members who were there — that suggest the bombing may have been preventable. Washington correspondent Joe Khalil reports. More #VargasReports: https://www.newsnationnow.com/joinus