Original sentence: After completing the gunnery course, he remained at Nellis as an instructor and R&D officer) of the 3596th Advanced Applied Tactics (later "Combat Crew Training") Squadron, where one of the instructors was Captain Manuel J
Edited sentence: After completing the gunnery course, he remained at Nellis as an instructor and R&D officer of the 3596th Advanced Applied Tactics (later "Combat Crew Training") Squadron, where one of the instructors was Captain Manuel J