An Air Force F-35A Lightning II deploys to Europe from Hill Air Force Base, Utah, April 14, 2017. The aircraft arrived and is conducting training with other U.S. and NATO aircraft based in Europe for several weeks as part of the European Reassurance Initiative. ERI ensures U.S. European Command has ready a persistent rotational presence of American air, land and sea forces in the region. Air Force photo by Tech. Sgt. Nathan Lipscomb