This is not about the one you think - that was used by Batman.

The Fulton surface-to-air recovery system (STARS)[1], also known as Skyhook, is a system used by the Central Intelligence Agency (CIA), United States Air Force, and United States Navy for retrieving individuals on the ground using aircraft such as the MC-130E Combat Talon I and B-17 Flying Fortress. It involves using an overall-type harness and a self-inflating balloon with an attached lift line. An MC-130E engages the line with its V-shaped yoke and the person is reeled on board. Red flags on the lift line guide the pilot during daylight recoveries; lights on the lift line are used for night recoveries. Recovery kits were designed for one- and two-man retrievals.

https://en.wikipedia.org/wiki/Fulton_surface-to-air_recovery...