>> reporter: defense attorney mark o'mara got physical. george zimmerman, trayvon martin. >> reporter: refocusing on head and face injuries whether consistent with an attack. how about somebody resisting the injuries, the two lacerations could that have come from cement. somebody resisting me, pushing down like this? >> i believe so. >> they're going to start the closing arguments today, joe, at 1:00. again, that's supposed to last roughly about three hours, but it's been very interesting for people, court observers anyway, to question whether or not zimmerman was going to take the stand and a lot of people said, it just depends on the type of defense case that is put up and they'll make that decision, you know, at game time decision at the last moment. seems as if the defense feels they've been strong enough, zimmerman doesn't need to get up and speak. >> listen, gene, if i'm the defense, and i got a lawyer that the judge loves as much as the judge loves this defense lawyer. >> right. you're feeling good, aren't you? >> can you believe that?