DT, as staged, Sonny's murder was purely gratuitous. Recall that the novel's version has him murdered with pistols.
I don't know how many Board members have fired weapons in a combat theater, but from my experience, missing a close target can happen even with an automatic weapon.
"Generosity. That was my first mistake." "Experience must be our only guide; reason may mislead us." "Instagram is Twitter for people who can't read."