History: B-17G Fortresses of the US 15th Air Force trailing condensation trails amid anti-aircraft flak bursts during the bombing run over Graz, Austria, 4 Mar 1945. [1200x849]

https://i.redd.it/ia0bxdum8v371.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/nufy50/b17g_fortresses_of_the_us_15th_air_force_trailing/?utm_source=ifttt