THROUGH THE OPEN DOOR: @ukraine_map posts this video of a UKR drone strike on a Russian electrical substation in Sumy. Russians tried to harden the target, but ran short of nets. The 330Kv transformer was taken out by a skilled Ukrainian FPV pilot.pic.twitter.com/hk7ycYpxRf

— Chuck Pfarrer | Indications & Warnings | (@ChuckPfarrer) May 25, 2026