Maybe you should look at cases involving armed police. They are. Regular occurrence in the states. Alternatively speak to Mike T - he'll most probably be able to give you some good examples.
Psychopaths are wired to be highly observant just as non psychopaths can be highly observant. A bird watcher is highly observant. Doesn't mean they don't make mistakes.
Not sure what point you are trying to make other than you are avoiding explaining your quite apparent contradiction.
All Police are armed in USA - so mistakes will be common ...
Only hand picked highly trained Officers are issued with guns in the UK
To become a Police firearms INSTRUCTOR in UK you have to be in the top 1% of Officers ...
There was no contradiction - I said "an Officer like her" - big difference to an average Officer - especially in 1985 ....
If you are sure beyond doubt that WPC Jeapes was wrong then I wonder what logic helped you arrive at that definite conclusion ?
Or do you know she was wrong because it contradicts your gut instinct about this case ?