The Olympian article's updated again to say that LE tried to take Reinohl alive at first but then he opened fire. Makes sense TBH, his online history (and of course his actions in meatspace) show that he's obviously an ideological zealot and not all there in the head.

“The suspect came out to the car,” Troyer said. “They attempted to put him into custody and shots were fired.”

Though if he was fantasizing about going out in a blaze of glory or worse still, somehow wining like he's the star of a Communist propaganda movie, his 40:0 shots:kills ratio shows that he's only capable of winning when ambushing random unarmed people and no good in an actual fight...