U.S. Air Force Staff Sgt. Joshua Matrine, a crew chief with the 159th Aircraft Maintenance Squadron, cleans the canopy on an F-15C Eagle aircraft assigned to the Louisiana Air National Guard at Leeuwarden Air Base, Netherlands, March 28, 2017. The 122nd Expeditionary Fighter Squadron, comprised of Louisiana and Florida Air National Guard members, conducted training alongside NATO allies to strengthen interoperability and demonstrate U.S. commitment to the security and stability of Europe. (U.S. Air Force photo by Staff Sgt. Jonathan Snyder)