Sling load training with Dutch CH-47 Chinook helicopters during an Exercise Falcon Autumn 2018. The Falcon Autumn is the large-scale annual combined exercise in the Netherlands. The Armed forces of the Netherlands trained together with other nations between September 17th and October 13th. The Boeing CH-47 Chinook is an American twin-engined, tandem rotor, heavy-lift helicopter developed by American rotorcraft company Vertol and manufactured by Boeing Vertol (later known as Boeing Rotorcraft Systems). The CH-47 is among the heaviest lifting Western helicopters. Its name, Chinook, is from the Native American Chinook people of modern-day Washington state.