Your defence if the copper seems dangerously close to assuming they are just automatons obeying orders and they can therefore never be held accountable for their action in squeezing the trigger.
The Police should always be accountable, especially where firearms are deployed and used.
In the case in point the intelligence was wrong, but the officer acted on that intelligence in good faith.
True, there may have been ample opportunity for a bomb to be detonated had there been one, but there’s no such thing as an experienced suicide bomber and people do strange things when they are put under pressure, more so when they’re about to blow themselves to paradise I suspect.
At the end of the day, all shootings by the Police should continue to be investigated, not just to ensure that the rules were followed but also, like TJ said, to see if there are new lessons to be learnt.
It’s these investigations that will ensure that the police don’t simply become automatons but remain accountable for their actions.
On another note, I wonder how many officers who do actually pull the trigger and kill someone leave CO19, or even the Police, not long afterwards?