A high view of an empty concert hall in Katowice. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282739/free-photo-image-theater-crowd-architectureFree Image from public domain licenseBus passing through. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305609/free-photo-image-station-city-buildingFree Image from public domain licenseAn F-16 Fighting Falcon, 510th Fighter Squadron, deployed to Krzesiny Air Base, Poland, in support of Aviation Detachment… https://www.rawpixel.com/image/3399047/free-photo-image-aircraft-airplane-apparelFree Image from public domain licenseAn U.S. Army Europe fighting vehicle, assigned to 1st Battalion, 4th Infantry Regiment, moves into a fighting position… https://www.rawpixel.com/image/4040475/photo-image-flower-plant-peopleFree Image from public domain license