The latest setback means the IOC milestone is now expected nearly two years after the original schedule set at contract award to Boeing in August 2018.
Lockheed Martin Ventures has invested in electric seaglider startup Regent to speed up the development of a military variant of the company’s aircraft.
U.S. Air Force officials have not backed off predictions of a first flight coming later this year, but certain conditions and a note of doubt have creeped in.