And, as you might expect, the chapter has been suspended by both the university and Kappa Alpha Order.
KA Order's statement is on their web site at
http://www.kappaalphaorder.org
Apparently KA Order has a national policy against discharging any kind of firearms on Fraternity property. I'm not quite sure why the Mizzou chapter president and vice president weren't aware of that (they were the ones arrested, according to the KA statement).