Qualified Weapons Instructor

Qualified Weapons Instructor (QWI) (queue-why) is a qualification given to graduates of the British Armed Forces Qualified Weapons Instructor courses. It is the equivalent to the United States Air Force (USAF) Weapons School Course or United States Navy (USN) Naval Aviation Warfighting Development Center warfare schools (including United States Navy Strike Fighter Tactics Instructor program or TOPGUN).

Source: Wikipedia — Qualified Weapons Instructor (CC BY-SA 4.0)