The BATF, on a "compliance visit" to a gunshop after hours in Sacramento (or Fresno, I can't recall exactly) shot the gun store owner about 5 times with their 9mms, and he was dead.
But get this (TRUE STORY! I SWEAR!!!!) their story which was backed up by their friendly coroner was that:
/1/ The crazed owner was going for a .45. (Not one he ever used or carried. A "shop gun".)
/2/ The BATF agents, fearing for their lives, drew their weapons.
/3/ The gun store owner put the gun to his temple and shot himself with his right hand, (even though he was left handed.)
/4/ The BATF agents, in full draw and unable to stop, shot him also, 4 or 5 times.
/5/ But since the gun store owner was "already dead" at the second their bullets struck him (!!!!????) there was no killing by the BATF. They were just "shooting a corpse", who just happened to pick up a counter gun and kill himself with his "off hand" much to their surprise. And since the coroner agreed with that scenario, there was not even a grand jury, nothing.
And who cares? He was only a scum of the earth gun seller, a "merchant of death", so good riddance, right?
All the above is the truth. It really happened in real life, not in a novel.
(But I think those two BATF agents are pretty good STU material, don't you agree?)