An order divided between Airbus, Boeing, and Embraer will see at least 260 aircraft, a mix of narrowbodies and regional jets, join the American Airlines fleet.
"We are going to hold them accountable every step of the way, with mutually understood milestones and expectations,” FAA Administrator Mike Whitaker said.
A decades-old ambition to make multiday, ultralong-endurance flight a reality is quietly solidifying within the U.S. military after a series of failures and false starts.