start you roll out at the beginning of you roll out your sample Z you keep z fixed for the entire roll out to get a trajectory you want the trajectory to say something about whatever Z was that you used for this trajectory what does it mean that high missile bases in Turkey Thailand see what we measured in many ways and that's what these four different papers are the first paper which are actually discrete variable in a directory and the second paper looks at B and the final state the third paper looks at Z and every