Andre Wagner prepares to launch pyrotecnic artillery April 17 at the Joint Multinational Readiness Center near Hohenfels, Germany, for Saber Junction 15, a large-scale decisive action training environment exercise designed to enhance interoperability among 17 NATO allies and partner-nation armies. (U.S. Army Photo by Sgt. Jennifer Joyce, 116th Public Affairs Detachment, North Dakota National Guard/Released)