Also from the article - “Hields followed the trail of RPG-7 rocket-propelled grenades coming towards him and started firing grenades one at a time, trying to home in. “Then I switched to automatic fire,” he said. A grenade machine gun has a box with 32 grenade rounds. “I emptied a box onto that position and you could see all the dust and smoke flying about where they hit.”
No wonder the remaining Tallyban honed in on his position, what a weapon! Hats off to Hields!