This is similar to the scissors described earlier but is carried out in either a steep climb or dive and the reversals are often carried out by executing a complete barrel roll. The ascending vertical rolling scissors places the fighter with the better zoom climb (or the higher initial energy state) at a disadvantage at first. Otherwisethe fighter with the best sustained rate of climb will have the advantage. If in a descending vertical rolling scissors the defender finds himself forced below his adversary he should attempt to place himself directly beneath his opponent and maneuver in phase with him. In this position he cannot be seen and can pick his moment to disengage with a splitS.