Well, doing noise or laser jamming to their GPS drones OS, or radio jamming so they won't fly at all, will take away any resistance. So, its impossible the ukrainan drones fleet to come from so far away, they must be near by, on a small airport. (like near Rzeszov) I Think because its so near the regular airport, they are still using a radar there, because the highway, has communication lines, from 5 to 5 km, over , information screens, tax stops, energy posts, etc