dakota. >> less than two minutes after receiving the call nypd officer peter cullen and his partner were there. >> there was a man standing in the street pointing into the archway saying that's the man doing the shooting. >> and i thought he meant the handyman because he was dressed in kind of old clothes. he says no, not him, him. >> he pointed to chapman. >> he says he shot john lennon and my reaction was he did what? >> chapman's demeanor was very calm. it was almost like he hadn't done anything. >> i put this guy against the wall and the next thing this guy says to me is i acted alone. which i thought was a very strange statement to make at the time. >> while they dealt with chapman, officers ton he rusheo the security office. >> i saw the woman standing over a body that was laying