All three services. I'm a first responder right now, working on getting into the army to be a 68W, then hopefully going back into EMS and law enforcement (and hopefully I can get a job at the PD I've been interning at because they want to include Tactical Medics with their SWAT team which would obviously be a big win-win for me). I just use a tactical bag that I had around and converted it to my personal BLS kit, but it doesn't allow for much organization or ease of use. I think everything you've said is more than enough info I needed, thank you very much, stay safe.