American 8th Air Force Boeing B-17 Flying Fortress bombing raid on the Focke-Wulf factory in Germany, 9 October 1943B-29 Superfortress strategic bombers on the Boeing assembly line in Wichita, Kansas, 1944A V-2 rocket launched from a fixed site in Peenemünde, 21 June 1943USAF Northrop Grumman B-2 SpiritUSAF Boeing B-52 StratofortressContemporary U.S. Air Force strategic bombers, top to bottom: the B-52 Stratofortress, B-1 Lancer and B-2 Spirit. B-1B in-flight with white clouds scattered underneath. Its wings are swept fully forward as the gray aircraft flies over the ocean.