Smoke rises from burning oil storage tanks as B-17s drop bombs on Heligoland island in Germany.

US Army Air Force Boeing B-17 Flying Fortresses bomb Heligoland island in Germany during World War II. B-17s in flight. Several aerial views of the island and another island next to it. Smoke rises from burning oil storage tanks on Heligoland island. A runway on the island in the background. Heavy flak. German coastline – Heligoland and Friesian islands. Bomb craters and smoke from burning oil storage tanks. Bombs are dropped from aircraft. The aircraft are in formation over clouds.