okay. we re listening to the second degree murder trial of george zimmerman. we just heard testimony from amy seward who was a firearms expert. seema iyre is with me. can you explain why mark o mara is focusing on the single action versus double action? o mara s trying to set up that george zimmerman s actions were spontaneous, they weren t thought out, they weren t for lack of a better word premeditated, that george zimmerman was under an immediate at th attack and he did it only once whereas the prosecution was showing it was a more deliberate, well thought out process. going back to lisa bloom. i go back remembering the opening statement. one of the lines that was more memorable, ready to fire. george zimmerman had that pistol in ready to fire mode. is this in a sense resetting all