That is exactly whst cops most extensive training is about...being better in the heat of the moment than the rest of us. Being able to have the temperament to judge use if lethal force in split seconds.

Training each and every street cop to the standards of a marine, where will the money come from? Sure as hell not the public, no, they want to defund the police. So how will these cops be trained in martial arts, combat and tactical analysis without money? Are they going to do it for free? Are you asking them to spend more time out of what is already a 12 hour shift to train and study for free?