What needs to happen is a northern ireland solution to the problem, or mafia style with a strict code of conduct, eliminating drug users, boozers, dealer types from joining the ranks, the militias need strict training and a ruthless hand enforcing the law of the code to the breakers, after that you need to operate in cells all over the nation all operating to achieve an end goal but trained to think independantly, train them on how to use weapons, keep calm in high pressure environments, do hits, get rid of evidence, plan for all eventualities whilst in an operation incase it goes a bit waywor