connection with anybody else. they don t know that right now. jumaane williams is on scene. a staff member of his was on the train. we ll try to get an interview with him to bring it to the msnbc viewers to find out what they can tell us about the incident. again, all officials right now are trying to find people just like that staff member to ask them what happened, to get all the information they can to find this person. with me here is donell harvin. you ve had experiences with mass shootings and with incidents in the district, but this is new york city. it s the country s biggest subway network, subway system, and this guy could be anywhere. and he could have partners, accomplices. we don t know that. absolutely. what you re experiencing in new york city is probably one of the biggest manhunts in the history of the city if not the country. the suspect still at large, clearly dangerous. there are individuals, including schools sheltering in place.