The humans in the airplanes are the main antagonists of the 2005 film, King Kong, and its video game. They went to kill King Kong.
King Kong (2005)Edit
Near the end of the film, they fought King Kong. Some of them died, but some of them survived. They killed King Kong in the film's end.
Peter Jackson's King Kong: The Video GameEdit
In the final battle King Kong fought the airplanes, and they killed him. In the true ending, they all died while King Kong was alive.