Watch at FMovies. The 1943 Navy training film (MN-84b) Fundamental Fixed Gunnery Approaches is part of a series known as the “Fixed Gunnery and Fighter Tactics” series used to enhance in-classroom learning of Navy pilots. Fundamental Fixed Gunnery Approaches primarily uses graphics and models to demonstrate the various approaches for fixed gunnery, though it does include some actual video footage of planes flying the maneuvers.