The father of one of the murdered University of Idaho students says new evidence shows that his daughter fought back against her attacker, according to multiple reports. NewsNation national security contributor Tracy Walder joins "NewsNation Prime" with the story. MORE: trib.al/enxU7n6 #NewsNationPrime "NewsNation Prime" is America’s source for unbiased news offering a full range of perspectives from across the U.S. Weekends starting at 7p/6C. #Prime NewsNation is your source for fact-based, unbiased news for all America. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij