WASHINGTON, Feb. 18 -- The Defense Advanced Research Projects Agency issued the following news: * * * National Museum of the U.S. Air Force to host DARPA Lift Challenge * The skies above the National Museum of the U.S. Air Force will become a proving ground for the future of aviation as it hosts the DARPA Lift Challenge, being run by the Defense Advanced Research Projects Agency (DARPA) from Aug. 2-9, 2026. The event challenges innovators to build unmanned aircraft, or drones, with revolutio  more