One has to wonder whether the Brady Campaign is of the opinion that armed security guards in school are an inherent risk, considering their latest blog post:
I urge everyone, regardless of your point of view on the subject, to watch this short video.
The video clip shows a Federal law enforcement agent, doubtless fully trained in firearm safety, shooting himself in the foot in front of a stunned classroom full of people.
This reinforces the point that guns in school are inherently dangerous. Even trained law enforcement officers can have potentially serious accidents.
Paul Helmke is correct to point out that being in possession of a badge doesn’t automatically make you a safe gun handler. But one wonders why he then goes onto say “any guns [in schools] should be in the hands of trained law enforcement officers.” What magical properties does having a badge imbue its possessor with? Studies have shown that gun owners are far less likely to mistakenly kill someone than police officers.CITE
In my training, I was told that my pistol should never leave its holster unless I’m actively defending myself, engaging in draw and fire practice at a range designed to handle that safely, or removing and unloading it for safe storage. Clearly someone either never bothered to tell the DEA agent that basic rule, or he chose to ignore it. Perhaps he believed his wonderful training would prevent an accident while carelessly handling a firearm in front of a group of students.
My solution to these problems is to reinforce, over and over again, the rules of safe gun handling, for both people licensed to carry guns, and for police officers. Â The more you reinforce the rules, the less the likelihood of poor judgment leading to careless mistakes will be, for all classes of gun carriers.
I’m not honestly sure I understand the Brady position, which seems to be that even trained police officers can exercise poor judgment and have gun accidents, which is why only trained police officers should be allowed to carry guns in schools. Does that make sense to you?  Me neither.