LONDON–It's been more than a year since ZeroAvia last flew its first testbed aircraft–a Dornier 228 with a prototype hydrogen fuel cell system–but the company’s flight-test program has not been ...

FORT DETRICK, Md. – Since its founding in 1951, the U.S. Army Institute of Surgical Research Burn Flight Team has conducted aeromedical evacuations for thousands of burn patients around the world.