In the summer of 1923, Army aviators began running a fuel hose from one biplane to another and setting endurance records. Technological leaps since then mean B-2 bombers can fly from Missouri to Korea and back, nonstop.

Photos from Ernest Havecker 100th Bomber Group 418th Bomb Squadron

Paul Allen's Flying Heritage Collection at Everett's Paine Field will be welcoming two World War II Bombers tomorrow. A B-17 Flying Fortress dubbed

Taken at Mildenhall, Suffolk in June 1942, this image appeared on the cover of an American magazine ''Air Trails" of Aug. 1942. Taken at the same time, see www.flickr.com/photos/8270787@N07/6970131027/in/set-72157...