"FILE - This file booking photo provided by the Seminole County Sheriff's Office shows George Zimmerman. The former neighborhood watch volunteer who killed Trayvon Martin told his wife to buy bulletproof vests for them and for his attorney, according to jailhouse calls released Monday, June 18, 2012. ""As uncomfortable as it is, I want you wearing one,"" George Zimmerman told his wife. (AP Photo/Seminole County Sheriff's Office, File)"