We as a military really need to rethink the people we feel is fit to lead and train soldiers

So im sitting at work in afghanistan and i recieve a email about latest adverse actions conducted on soldiers in afghanistan. But this one story tells me that we as a military need to rethink who we feel should be recognized to lead and train soldiers.A SSG who maltreated, assaulted, and pointed loaded weapons at his Soldiers on multiple occasions received a Field Grade Article 15 and was reduced to SGT and ordered to extra duty and restriction for 45 days. Now when you see something like this why keep this person a nco or even in the army if we are supposed to be fighting the enemy why should we have to worry about our brothers in arms threatening our own lives.