In the cohesion rules on page 19, it states that a unit is in cohesion if the miniatures are within a vertical distance equal to the height of the unit leader's silhouette. For repulsor vehicles, the silhouette ignores the base and flight stand, making the silhouette exist above the base. How is the height of the silhouette measured in this situation for the Speeder Bikes. Is the attached image a legal cohesion?