Florida Law protects TM's actions to defend himself and stand his ground from an unidentified stalker with a weapon. The mere act of stalking him at night in the rain would lead a reasonable 17 year old in today's society in FLORIDA that he could be in danger.
http://www.leg.state.fl.us/statutes/index.cfm?App_mode=Display_Statute&URL=0700-0799/0776/0776.html
He did not have to retreat from what he perceived as a threat continuing to follow him towards his family's home. He didn't. Whether or not he tried to disable/disarm/or knock out the person stalking him without any provoking physical contact is irrelevant according the the law. Seeing the weapon or reasonably fearing a person means to harm you justifies force and stand your ground.
I read that simply showing or pointing an unloaded gun in Florida carries a mandatory 3 years. I will go back and find the link if necessary.
I live in a gated community. I have five adult sons, 2 over 6'. They enter my home through the back sliding glass door, from a similar dog area such as this subdivision. IF they come during the day, the gates are open. IF they come at night, after dark they are closed and need a pin number to drive in or a pool key/gate key to come in the walk in gate, the outside is completely surrounded by very high cement walls. IF TM was walking in the subdivision he had to have a pin code or key. GZ had to know this.
IF they came over to visit after dark and walked back to my house from the front open parking spaces and my 30 year old hispanic neighbor across from me who is unfamiliar with them- stalked them from the front, as they walked in the gate, followed them down my sidewalk, and then approached them to ask them why they were in this complex.... yes, complaints are getting filed if one of my boys or husband doesn't sock the guy first. I would think instant creep. Keep in mind, in Florida and here in Cali. With gang and racial tensions, A Hispanic looking male in GZ age range doesn't exactly look safe and authoritative to TM either.
IMO
GZ intiiated the course of events, by his suspicious and paranoid stalking. It is reasonable to believe he made a young boy in a unfamiliar area feel physically threatened and in danger. He approached TM on purpose with a weapon close enough to verbally communicate to him. I believe he tried to detain him when he would not do as he was told or answer questions he was asked. IMO
I keep reading he was the Neighborhood Watch Captain. Did I miss where someone appointed him as such. I thought it was determined he appointed himself and refused an offer to join LE neighborhood patrols etc. He was just a regular neighbor with no authority, no identification, no right to follow TM or shoot him. TM had every right to sock him in the face, and render him unable to continue to follow him or shoot him. He failed. Sadly.
Also, I read ( I will find the link if you make me) that he took Adderall for ADD. I am betting his dr also prescribed anti anxiety. I know my brother on Adderall was very mild, non hyper, focused, and didn't feel anything. Not happy, not sad, not anxious. That could explain his very level and matter of fact behaviors.
I am late for an appointment but just caught up and now probably behind again...