I think a police officer, who has a considerable amount of training, and has sworn to protect the people and uphold the law, even when it puts their life in danger should take more than a split second to make a decision when faced with a 12 year old with a gun. As an analogy, we go to great lengths to ensure that those who face the death penalty are absolutely guilty, with the ideal that 100 guilty are set free before 1 innocent are put to death. But then we have cops pulling the trigger at the drop of a hat, rarely facing ANY significant consequences. Shouldn't they take at least a tiny bit longer to determine the threat level before shooting to defend themselves, when THEY are the ones who chose to put their lives in danger to uphold the law? ESPECIALLY WHEN IT'S A TWELVE YEAR OLD.