Sailors assigned to Assault Craft Unit 4 prepare material recovered within the Atlantic Ocean from a high-altitude balloon for transport to federal agents at Joint Expeditionary Base Little Creek, Va. on Feb. 10 (U.S. Navy Photo)
The issues encountered by the U.S. Air Force earlier this yr in shooting down a slow flying, high-altitude Chinese balloon have led the Defense Advanced Research Projects Agency (DARPA) to launch a small business innovation research (SBIR) effort to discover…