on subway platforms what alarm bells does it raise? >> you pointed out recent cases. in 2013 the boston marathon bombing and then in 2016 there was a pressure cooker bomb that was placed inside a storefront not far from where cnn was in september of 2016, also down at the jersey shore. authorities are going to handle this with an abundance of caution. you always assume it's a lethal device until you can walk it back and make a determination. if they can disrupt something like that on the scene, they'll do it. if they can't, they'll do what they did last year with the suspicious package sent to cnn. they'll put it into a big egg shaped device vehicle called a total containment vessel and they'll remove it from the scene. if this was placed there as a hoax, they will certainly in manhattan, in new york city be able to go back and look at security camera footage and walk