Teargas/pepper spray I've considered, the difficulty is deploying it in close quarters (for example, the inside of an ambulance) without exposing yourself in the process. I've also considered a Taser, which will more reliably disable an assailant under the influence of drugs or in an altered mental state (a decent portion of the population EMTs get called for). A handgun is probably off the list of things to have along... I've got a feeling any EMT who shoots a patient or someone on-scene is going to find himself out of a job really quickly. This would, of course, be influenced by the neighborhood I end up working in.
White phosphorus grenades? Where do YOU live?
