One morning in June, the head of export at Ukrainian drone company Stellarion found himself unexpectedly in need of a U-Haul outside the Detroit Metro Airport in Michigan.
Stellarion was set to test its drones in front of American soldiers at a competition organized by the Pentagon at Camp Grayling, a military base three hours away. But while many of its 48 invited competitors were American companies that had had weeks to modify, prepare, and fi…