Fire Force trooping drills evolved over the years from 1974 until the end of the Bush War. The drills remained the same apart from the seating arrangement for the stick leader and MAG gunner or gunners.
The diagrams are earlier drills which have the stick leader sitting in the front facing backwards. By the end of the war the stick leader sat in the rear inside the MAG gunner. Also in the early deplaning drill diagram the stick leader is on the right but by the later years of Fire Force he would move across to the position next to the MAG gunner, so that he can control the gunner and stick from a central position.
The Aide Memoire trooping drills in this article are from the RR COIN Booklet and depict operational drills towards the end of the war, where the stick commander sat inside behind the pilot so he could see what was going on ahead. He would also put on a head set, so that he could listen to the talk on to the target.
In the RAR Fire Forces towards the end of the war, some sticks might have x2 MAGs and in one case an officer in A Coy 2 RAR had x3 MAGs in his stick.