Zimmerman Worried as Trial Nears End George Zimmerman is worried as his murder trial draws to a close, fearing that he could spend the rest of his life in prison if found guilty or in hiding if acquitted, his lawyer said. Zimmerman has spent the last few days huddling with family, ABC News has learned. Zimmerman, 29, is charged with second degree murder for killing Trayvon Martin, 17, on Feb. 26, 2012. If convicted of that charge he could be sentenced to 25 years to life. If Zimmerman is convicted of a lesser charge like manslaughter, he could be sentenced to as much as 30 years. The judge is expected to decide today on what lesser charges the jury could consider. Lead defense attorney Mark O'Mara says Zimmerman is concerned that even if he is acquitted, he would spend the rest of his life locked in the confines of his security regimen â hiding from the public and concealing his identity. "He's very worried about his safety, personal safety going forward," said lead Zimmerman defense attorney Mark O'Mara. Because those same people who portended the fear and hatred leading up to this trial probably are not going to accept an acquittal. If Zimmerman is found guilty he will immediately be remanded into custody and escorted into Seminole County Jail. O'Mara says any conviction would be met with an appeal, and hinted he could decide to use a Stand Your Ground immunity hearing during an appeal. Zimmerman's defense team elected not to apply Zimmerman's right to a stand your ground hearing during the trial because the immunity hearing can only be invoked once. If exonerated he will be immediately released. Trayvon Martin's parents are undecided about whether they will be in court as the verdict is read. Sources close to his mother and father tell ABC News that the last few days have taken their toll. After 12 days of testimony, prosecutors are making their final preparations for their closing statement. Prosecutors allege that Zimmerman profiled and followed the unarmed teenager. On Wednesday, prosecutor John Guy used a mannequin as he attempted to demonstrate that Zimmerman's version of the fight may not be accurate. Jurors and attorneys stood Wednesday as Guy straddled the life-size dummy to demonstrate that it was possible that Martin was backing up when he was shot. They are expected to tell jurors much like in their opening argument that Zimmerman shot Martin because he wanted to and not in self-defense. The defense team's primary concern, sources told ABC News, remains what is referred to as a compromise verdict, one in which jurors would acquit Zimmerman of his second degree murder charge, but convict him on a lesser offense of aggravated assault. Defense attorney Jose Baez, who led Casey Anthony's defense, believes Zimmerman will not be found guilty of second degree murder, but will be convicted of aggravated assault if the judge allows the jury to consider that charge. I think the strongest possibilities include a lesser offense. I do see that the prosecution did do some favorable things," Baez said. Closing arguments are scheduled to begin today and it is anticipated that jurors could begin deliberating by Friday afternoon.