Florida law requires firearms be secured, or in your immediate control, so that a child under 16 cannot have unsupervised access. If someone is harmed, the penalty is enhanced. I saw tragedy involving young children and guns, and my first thought was, why the f... did the kid have access to the gun? Parents should know better but stupidity is rampant.
As I have reported here before, I researched many mass shootings for my training courses on active shooters. In almost every case, the active shooter signaled their violent intent in advance. But in most of those cases, people around them didn't recognize the signs, or failed to report it, or failed to act to intervene. In this case it appears the reporting mechanism worked, but the response was impotent. That kid was a bomb waiting to go off. An opportunity to intervene was missed, and then his dumbass father armed him with a deadly weapon. The Sandy Hook shooters mother did the same thing. The degree of stupidity here is astounding.