SF could mean anything from an army ranger to a spec.activities.div. operator to a green beret and anything in between, including a SEAL, Delta, etc., but most don’t disclose operations ever or for many years. The last I heard somewhere in bf was a tac tool by Becker, but it may have been a marine for all I can remember: after using it to breach, it was the melee weapon on hand and killed several Taliban, not sure how many—but it was every hostile inside the small confines of the area. If seven was the actual death toll from edged weapon(s), I doubt that it was one, but at least two—a knife or two, a hatchet, and maybe the butt of a rifle. One hell of a motivated soldier though, I’d say!