toxic, and tonight there would have been no way to predict that. someone here said of the uprising, it s over. while that might have been hyperbolic, this is the heavy gunfire that you re hearing there, is that again warning shots? does it appear to be directed at people at ground level, or is it in the air? can you tell? reporter: it appears to be in the air. you don t hear the rounds that we saw a tracer round go over the heads of the protesters. it seems to be coming from an armored personnel carrier that we saw in an underpass. big caliber, heavy aomatic