In 1936, the Focke-Wulf Fw 61 became the first fully functional and practical helicopter, with its first free flight occurring in June of that year. This vertical-lift aircraft, invented in Germany, represented a major leap forward in aviation, opening up new possibilities for rescue, surveillance, and transport in confined areas. Unlike planes, helicopters can hover and land virtually anywhere.

The helicopter, with its unique ability to hover, has become a powerful symbol for poets and writers representing observation, rescue, and even a kind of suspended, voyeuristic view of the world. It appears in modern and contemporary poetry as a symbol of the technological age's ability to see all, often with a sense of surveillance and unease. Its distinct sound and movement have become a part of the modern soundscape.