 In 2013, the Air Force Research Laboratory’s Surfing Aircraft Vortices for Energy project showed 10-15% in fuel savings, installed on two Boeing C-17 Globemaster IIIs.In 2017, NASA measured 8%-10% lower fuel flow with two Gulfstream III aircraft on wake surfing test flights.In 2018, the ecoDemonstrator, a Boeing 777F freighter from FedEx Express, had its fuel consumption reduced by 5-10% with the autopilot maintaining the separation based on ADS-B and TCAS information.