Family of long-range tilt-rotor VTOL UAS with patented box-wing design (verified by NASA’s OVERFLOW study on Elytron 4S - exact geometry now flying as T-Wing), can be configured with 3 different types of propulsion capable of: 700 silent mile range (hydrogen and ducted fan), 220 nm range (battery/hydrogen and propeller), or 400 nm range (gas and jet). Includes T-Wing Recon and T-Wing Interceptor variants. In development.