What Is The Toughest Exercise At The US Military’s Elite Sniper School (Video) Monday, 17 October 2016 Goverment, News, People, Politics, USA, War, World YouTube From Business Insider: Nicholas Irving is a retired US Army Ranger sniper. Irving, author of "Way of the Reaper," discusses the most challenging part of the military's elite sniper school. WNU Editor: for the video, go to this link. Tweet Subscribe to receive free email updates: