Air Force Staff Sgt. Joshua Matrine cleans the canopy on an F-15C Eagle aircraft assigned to the Louisiana Air National Guard at Leeuwarden Air Base in the Netherlands, March 28, 2017. Matrine is a crew chief assigned to the 159th Aircraft Maintenance Squadron. The 122nd Expeditionary Fighter Squadron, comprised of Louisiana and Florida Air National Guard members, will participate in Frisian Flag, a Netherlands-led exercise which is also one of Europe’s largest aerial warfare exercises, to strengthen interoperability and demonstrate U.S. commitment to the security and stability of Europe. Air Force photo by Staff Sgt. Jonathan Snyder