In the days when aircraft were not easy to fly those who could pilot them well became Flying Instructors. They formed their own cult and had long, arduous and at times humiliating initiation ceremonies where the 'knowledge' was preserved and passed on. After they became 'Qualified' there were subsequent steps to gain deeper knowledge.
When aircraft became easier to fly weapons delivery became the next mystery around which cult like status developed along with long, arduous and at times humiliating initiation ceremonies where the 'knowledge' was preserved and passed on. The 'Weapons Instructor' was born.
Where is the next cult going to develop, somewhere deep in 'battlespace networking'?