One thing that puzzled/bothered me about the case from the beginning. Zimmerman had stated as TM approached him GZ reached for his cell phone in his pocket. Now assuming that GZ is right handed, his phone was probably on the same side, and GZ could have exposed the firearm. I don't have a problem with this as RJ had already told that TM may have thought GZ was a cop or security guard, he still had no reason to attack.
It also bothers me that GZ, or I would not have had my radio or cell phone in my holder or pocket. I would have still had it in my hand in case I needed to contact dispatch. If you want me to be truly honest I think GZ was reaching for his gun. I have never posted this until now because somebody on the prosecution side may have picked up on it. Actually considering that TM was on GZ's chest above the waist GZ could not get to his gun, unless he was able to push TM off momentarily. I believe GZ had the gun in his hand, but did not fire until he felt he had to. Due to the darkness, the rain, and the gun being black TM probably did not even see the gun in his hand until that last moment.