The mention of ‘IA’ brings memories. tumbling back...GPMG IA training went something like this: “Gun firing alright. Gun STOPS!” “Butt in the shoulder. Working parts to the rear. Lower the butt. Open the top cover. Clear the feed tray. Open the feed tray. On looking inside you see...[stoppage details then described from which hapless gunner has to make decision on what subsequent drill to follow]. All etched in my memory, which probably explains why I tend to forget to get the car taxed, walk the dog, mow lawn etc etc.