magazine "inspired" had an article that trace totals about, urging followers to use trucks to mow down what they called the enemies of allah. isis later had something similar. what can we do, if anything, to prevent the next tragedy? let's talk about it with a former cia analyst. he joins us now from new york to walk us through what happened. what we are able to learn from us. welcome tonight, good to have you with us. trace told us about what we heard from "inspired," but you have pointed out that the islamic states magazine essentially gave bullet points for exactly what we saw happen today. tell us what happened pray to speak had literally had bullet points, and the islamic states online magazine in the november 20 2016 edition. it walked anyone who wanted to engage in this kind of attack through the specifics of vehicle selection, target selection, surveillance beforehand, understanding the routes, and some other key additions. this is correct guidance from