Seems that we have proof right there that by the time Raimondo arrived, Trayvon was dead. You don't perform CPR on the living.
We have the time of the gunshot based on cellphone audio, and the time from a police officer of when he arrived on scene. How long was that ?
Gunshot at 7:25.
Trayvon dead by 7:30.
7:30 - "Zimmerman tells police he shot Martin in self-defense. In a police report, Officer Timothy Smith writes that Zimmerman is bleeding from the nose and back of the head."
This is the timeline supplied by CNN.
Trayvon could not possibly have been alive for more than 5 minutes.
Even so, 5 minutes is an eternity during a situation like this. In five minutes, Trayvon could have shot Martin, dragged his body into the bushes, gone home, and been in the shower cleaning up.
Thank you very much for that time line!