Laser sighting systems help officers with target identification, and as we well know when deploying any weapon system, target identification is key. We are not always going to have the luxury of getting into a gunfight under "ideal" conditions.
ATF tactical medics operate as a special agent EMTs with a life-saving skill set. They can perform classic trauma-care functions such as CPR, bandaging, splinting, applying oxygen, and spinal immobilization. They also utilize advanced skills.
For those who finish their law enforcement careers, the breadth of experiences the profession avails them offers all manner of post-career options, and nothing speaks to the heart of the adrenaline junkie like another round in the octagon of law enforcement.