my office. it s a terrifying ordeal. we have here onset ron hosgow, cnn law enforcement analyst tom fuentes and art roderick, former assistant director of the u.s. marshals office. this fire alarm that was pulled, what can you tell us about that? is that abnormal and unusual situation? it is unusual because we re talking about how this seemingly was planned pretty well. they came in, did a hit and got away. when you talk about active shooter protocols and some of the training and we had an earlier witness talk about how started going through active shooter training is one of the protocols is shelter in place, get behind a locked door and secure yourself into the facility until law enforcement comes around. when somebody pulls that fire alarm, that changes the protocol scenario. and has everybody evacuate out of the building, which unfortunately gives the shooters quite a few more targets to shoot at.