[No way he's from the present he's just also carrying improbably futuristic high-tech weaponry and that's not weird. What's weird is being from the past. Why are there so many (like 4) of you.]

Equipment. Uhhh lets call them mobility assistance devices. [that's bullshit] R-E the assassination plot: obviously, you would need to thwart it in order for it to be a decent story, unless you plan to leave behind a memoir. How would you escape the outlaws? Or re-attach your foot, I suppose.