On April 6, 1924, four U.S. Army biplanes departed Seattle to attempt the first aerial circumnavigation of Earth - 26,000 miles with no radio nav, no weather radar, and no margin for error.
In 1924, eight U.S. Army Air Service airmen became the first to circle the globe by air, crossing 26,000 miles in open-cockpit biplanes before Charles Lindbergh ever left the ground.