Emergency services should ideally work together to ensure the safety of everyone involved. It doesn't help if the injured person is still armed, for instance, and could hurt the person attempting to medically treat them or bystanders. The 1st thing Emergency workers do is assess the scene for risks and then proceed when it's safe to do so. I do totally agree that the boys in your story here should have been taken to an ER before going to the police station for questioning though. That's a law suit waiting to happen.