I was never qualified HA, HB, HF etc so that is why I am out of my lane. Basically, as I saw the issue on the fringes, the Sappers using explosives in the Afghan hills were pretty proficient and the Ammo tech world began to work with the Engrs in a more congenial fashion than in the 1990's time frame.
During the 90's it seemed to me getting the required training was hit and miss and when the CF had to compete in FTXs with the US, for instance, we were at a significant disadvantage with the USAF CE organizations.