>> as we reported at the top of the program, george zimmerman's best friend took the stand as a prosecution witness. he's work in law enforcement for two decades and convinced zimmerman to purchase a gun. here is participant of his testimony. >> and it was actually you who asistered him when he decided that he need add firearm, correct? >> that is correct. >> and did he tell you the reason why he wanted to get a firearm? >> he -- he asked what would -- whether he should or shouldn't to start with. >> okay. >> and i recommended that he should, that anybody who is a non-convicted felon should carry a firearm. >> that's your sort of life philosophy? >> that's my opinion, correct? >> being armed is better than not armed? >> police aren't always there. >> the type of gun zimmerman purchased is easy to carry and